The article gives several facts about air pollution.

Before making a decision, we need to check the facts.

In fact, many students prefer reading on paper.

As a matter of fact, the museum is free on Sundays.

Sleep is an important factor in a student's memory.

Price was the main factor in our final decision.

The success of the project depends on several factors.

Clear signs facilitate communication between visitors and staff.

Online forms can facilitate the application process.

Pictures and real objects can facilitate language learning.

The new sports facility will open next month.

The village needs better medical facilities.

She has a natural facility for languages.

His facility with numbers impressed the teacher.

Face-to-face interactions and conversations can affect the creative process.

Lack of sleep affects how well students remember new words.

The story about the old volunteer deeply affected the class.

The disease mainly affects the lungs.

The child showed great affection for her grandfather.

Many students remember their first school with affection.

Music can have a strong effect on mood.

The new reading plan had a clear effect on students' confidence.

The school rule will come into effect next Monday.

The painkillers took effect rapidly.

That deal would create, in effect, the world's biggest airline.

Clean water helps prevent infection after a cut.

Crowded rooms can increase the risk of infection.

The doctor said the child had a throat infection.

The medicine helped control a serious infection.

Your goal is not to be a perfect public speaker.

The small room was perfect for quiet reading.

The old bike is still in perfect condition.

The team spent weeks perfecting the robot design.

She practiced daily to perfect her pronunciation.

The story about a hidden city was pure fiction.

The article mixed fact and fiction, so readers had to check details.

Many students enjoy science fiction because it imagines future worlds.

This book is a work of fiction, not a history textbook.

The delay created a difficult state of affairs for the team.

This is a private affair, so please do not discuss it online.

The report focuses on public affairs in the city.

The office of student affairs helped new students find housing.

The film tells the story of a secret love affair.

The newspaper reported that the official had an affair.

We took a direct train to the city.

Please give me a direct answer.

Stress can have a direct effect on sleep.

This train goes direct to the airport.

We flew direct from Beijing to London.

A volunteer directed us to the main gate.

The guide directed our attention to a small painting.

She hopes to direct a short film next year.

Still, do not go too far in the other direction.

The children ran in all directions when the bell rang.

The river changes direction near the bridge.

Read the directions before you take the medicine.

The experiment was done under the teacher's direction.

The bus goes directly to the railway station.

Students can speak directly to the counselor after class.

I will call you directly after class.

The bank is directly opposite the post office.

The director of the hospital welcomed the volunteers.

A company director must make careful decisions.

The film director asked the actors to try again.

She became the youngest director in the drama club.

The school directory lists every teacher's office number.

You can find local shops in an online directory.

Save the photos in a separate directory.

The program creates a new directory for each project.

The village can be reached by an indirect route through the hills.

The new rule had an indirect effect on small shops.

His words were an indirect way of refusing the invitation.

At dinner, his quiet reply was an indirect refusal of the invitation.

Draw a rectangle that is six centimetres long and four centimetres wide.

The classroom window is shaped like a rectangle.

A passer-by called an ambulance after the traffic accident.

The injured player was taken to hospital by ambulance.

The ambulance arrived within ten minutes.

Talent, ambition, energy and luck helped Dickens become a distinguished writer.

The young nurse was full of ambition and kindness.

Her ambition is to become a doctor in her hometown.

He finally achieved his ambition of studying abroad.

The ambitious young engineer designed a cleaner bus.

She is ambitious for her students and expects them to read widely.

Building a library in one year was an ambitious plan.

The school set an ambitious target for saving energy.

The Chinese ambassador gave a speech at the university.

Several students met the ambassador to learn about international work.

The best ambassadors for the sport are the players.

The singer became an ambassador for children's reading.

Tourists went to the embassy for help with lost passports.

Embassy staff arranged the meeting with local schools.

You should contact the embassy before applying for the visa.

The last sentence is ambiguous, so readers may misunderstand it.

His reply was deliberately ambiguous.

The notice remained ambiguous even after we read it twice.

I had only a vague idea of where the village was.

His answer was too vague to be useful.

The instructions were vague, so we asked for more details.

The mountains looked vague in the morning mist.

A vague outline of the island appeared on the horizon.

The new school term begins in September.

Our art club meets every Friday this term.

Regular exercise protects your health in the long term.

The job is for a fixed term of six months.

The terminal exam covers the whole book.

The line stops at the terminal point near the river.

The hospital cares for patients with terminal illnesses.

Meet me at Terminal 2 after you land.

The bus terminal is next to the railway station.

The keyboard can help determine people's identities.

Scientists worked to determine the cause of the fish deaths.

Several factors determine the final price.

She determined to improve her handwriting before the exam.

The team was determined to finish the project on time.

Photosynthesis is a scientific term in biology.

The guide explained each medical term in simple English.

Read the terms of the agreement before you sign it.

The two clubs are on good terms after years of cooperation.

In terms of cost, the second plan is better.

The city has improved in terms of public transport.

Add a bit of salt to the soup before tasting it.

Maya saved bits and pieces of colored paper for the art project.

The class built the model bridge bit by bit after school.

She said she was not a bit tired, but in fact she was not a little tired.

The puppy bit the rope and pulled it across the room.

A mosquito bit him on the ankle during the picnic.

A mosquito bite on his ankle became red.

She took a bite of the apple and smiled.

The medicine tasted bitter, but it helped his throat.

The tea became bitter after it was boiled too long.

Losing the final was a bitter experience for the team.

A bitter wind blew across the playground at dawn.

He was bitter about missing the last train.

We went to the science museum last Friday.

The interview went better than I expected.

After lunch, the discussion went on for another hour.

Doctors from many countries attended the medical convention.

The city will host a national convention next summer.

Several countries signed an international convention on climate protection.

The convention on children's rights is taught in many schools.

By convention, the oldest member speaks first.

In some cultures, shaking hands is a social convention.

The factory still uses conventional methods to make paper.

Conventional wisdom says that practice improves memory.

Her dress was simple but less conventional than the others.

The ending of the story felt too conventional.

The school art festival is the biggest event of the month.

The heavy rain was the main event of the weekend trip.

The 100-metre race was the first event of the afternoon.

Table tennis became a popular event at the school games.

After several wrong turns, we eventually found the hotel.

The small club eventually became a national organization.

Careless habits can eventually lead to serious problems.

Early intervention helped the child learn to read.

The conflict ended after international intervention.

Medical intervention may be needed if the fever continues.

Students invented a simple tool for collecting leaves.

Who invented the telephone?

The club invented a new game for the school fair.

He invented an excuse for being late.

The child invented a story about a lost robot.

The invention of paper changed human communication.

Necessity often drives invention in daily life.

The safety lamp was an important invention for miners.

Her water-saving bottle was a useful invention.

His excuse was a pure invention.

The strange story was a complete invention.

The young inventor built a robot that waters plants.

The inventor of the device later became a science teacher.

A good inventor keeps testing an idea after failure.

Follow all rules carefully to prevent disqualification.

A helmet can prevent a rider from serious head injuries.

Washing hands helps prevent the spread of disease.

Is Friday afternoon a convenient time for the meeting?

It is convenient to book tickets online.

The new app is convenient for students who borrow books often.

The library is convenient for students who live nearby.

The hotel is convenient to the railway station.

For convenience, the list is arranged by topic.

Please reply at your convenience.

Many people enjoy the convenience of online shopping.

The hotel offers many modern conveniences.

Better signs are a simple convenience for visitors.

The school gym will be the venue for the speech contest.

Because of the rain, they changed the venue to the indoor hall.

The museum is a popular venue for small concerts.

We walked along a quiet avenue after dinner.

The museum stands on Fifth Avenue.

Reading gives students another avenue for understanding the world.

The team explored every avenue before giving up.

Mina nodded her head when she understood the rule.

You need to use your head before choosing an answer.

The head of the club announced a new reading plan.

A small bridge stands at the head of the valley.

Ms. Chen will head the school reading project this year.

We headed for the station after lunch.

The striker headed the ball into the goal.

Go straight ahead and walk about three blocks.

The road ahead was covered with fallen leaves.

Our class is two lessons ahead of the other class.

Careful students plan ahead before the exam week.

She worked hard to get ahead in science.

The overhead lights made the reading room bright.

Workers repaired the overhead wires after the storm.

A plane flew overhead during the match.

Dark clouds hung overhead before the rain began.

The headline caught my eye before I read the article.

A clear headline helps readers understand the story quickly.

The victory made headlines across the country.

Today's headlines focused on the new railway line.

The headmaster welcomed new students in the school hall.

Parents met the headmaster after the ceremony.

The headmistress spoke about reading habits at assembly.

My grandmother once worked as a headmistress in a village school.

The head teacher welcomed the new students at the gate.

A message from the head teacher was printed in the school newsletter.

Rain beat against the classroom windows during the exam.

The soldiers beat back the attack before morning.

Her heart beat fast before she gave the speech.

The doctor checked whether the patient's heart was beating normally.

Our team beat the visitors by two points.

Lina beat the school record in the 800-metre race.

The song has a strong beat that is easy to follow.

The nurse listened carefully to each beat of the baby's heart.

He swung the baseball bat and hit the ball far.

The young player chose a lighter cricket bat.

A bat flew out of the cave at sunset.

Bats can find insects in the dark.

My car battery has run down; it needs recharging.

Please charge the phone battery before the trip.

A battery of guns stood behind the old wall.

The report described an artillery battery near the river.

Many soldiers were wounded in battle.

The army won the battle after a long night.

She faced a long battle against illness.

The villagers began a battle for cleaner water.

The two teams fought a close battle for first place.

There was a battle over how to spend the money.

Students debated the rule with their teacher after class.

The committee debated whether to build a new library.

The discussion turned into a heated debate.

Our class held a debate about school uniforms.

The teacher gave a clear explanation of the rule.

It is clear that more practice is needed.

Please make your meaning clear before the discussion starts.

The water was so clear that we could see the stones.

After a short walk, she returned with a clearer mind.

We went hiking on a clear spring morning.

Please clear the plates from the table after dinner.

Volunteers helped clear away the fallen branches.

The sky cleared up before the match began.

Keep clear of the broken glass on the floor.

Passengers must stand clear of the doors.

She stayed clear of the argument and kept working.

Please speak clearly so the whole class can hear you.

The map was printed clearly on the first page.

The results clearly show the need for more practice.

He was clearly tired after the long trip.

You can clarify this question by studying British history.

The teacher clarified the difference between the two words.

Please clarify your meaning before we vote.

The judge declared the game over after the heavy rain.

The school declared Monday a holiday after the sports meeting.

The country declared war on its neighbor.

Travellers must declare expensive goods at customs.

Workers are required to declare their income honestly.

The students signed a declaration to protect the river.

The declaration of war shocked the whole country.

Her public declaration of support encouraged the team.

Please fill in the customs declaration before landing.

A false declaration may lead to a fine.

The physics teacher had to raise his voice over the noise outside.

I recognized my sister's voice on the phone.

She spoke in a calm voice during the interview.

Students should have a voice in school activities.

The survey gave parents a voice in the new policy.

In the passive voice, the receiver of the action becomes the subject.

Use the active voice when you want a direct sentence.

Several parents voiced concern about road safety.

The young speaker voiced her opinion clearly.

Many doctors advocate walking for thirty minutes a day.

The group advocates cleaner energy and safer streets.

The writer advocated giving children more time to read.

She is a strong advocate of equal education.

The coach became an advocate for daily exercise.

A legal advocate spoke for the family in court.

The advocate asked the witness a careful question.

I received an email from my cousin yesterday.

The volunteer received a prize for her work with children.

Each family received help after the flood.

The hotel received guests from several countries.

The new students were warmly received by the class.

The injured runner received treatment at once.

The radio receives signals better near the window.

She accepted the invitation to speak at the club.

He accepted the job after talking with his family.

The team accepted the new student as a member.

It took him time to accept the truth.

A good leader accepts responsibility for mistakes.

He picked up the receiver and called the office.

Please put down the receiver when the call is over.

The old radio receiver still works well.

The receiver picked up a weak signal from the mountain station.

Keep the receipt in case you need to return the shoes.

The shop assistant printed a receipt for the customer.

On receipt of your application, we will send a reply.

Please confirm receipt of this message before Friday.

The visiting students received a warm reception at our school.

The singer's new song got a mixed reception online.

They held a reception after the concert.

The team attended a reception at the city hall.

Ask for a visitor card at reception.

The notice at reception listed the meeting rooms.

The phone has poor reception in the basement.

We moved closer to the window to get better reception.