I. Change sentences into the passive (Present simple):
1. Mr Hai delivers the letters everyday.
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2. The children often buy the tickets at the box office.
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3. They usually finish their homework before bed time.
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4. The teacher corrects our exercises today.
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5. We often watch the shows of music on TV .
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6. We do a written test today.
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7. Everyone always see the Picasso`s exhibition .
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8. The workers clean the streets everyday.
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9. Careless driving causes many accidents.
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10. Weeds cover the river bank.
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II. Change sentences into the passive ( Past simple).
1 - Mrs Allen wrote that novel in 1998.
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2. Nam borrowed the reference book from the shelf yesterday.
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3. The boy ate two loaves of bread last sunday.
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4. He left the letter on the desk some minutes ago.
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5- My mother bought a new bike for me last month.
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6- Our form teacher returned our written test to us last lesson.
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7- The Chinese invented paper in the century A.D.
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8- Vietnamese planted trees in their neighborhood a year ago.
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9- The children played games yesterday.
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10- My sister did the housework yesterday.
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11- The publisher published his book in 1996.
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12- They repaired our desk during the weekend.
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13- Jack London wrote the novel "Martin Idon".
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III- Complete the sentences, using "adjective+ to infinitive ":
Ex: It/ lovely/ see/ you/ again. -> It is lovely to see you again.
1- I/ too excited/ do/ anything.
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2- Lan / glad / see / her old friend again.
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3- The students / worried / hear / the new information.
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4- She / strong enough / carry / all those heavy bags.
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5-Tam / intelligent enough / finish / the test / an hour.
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6- He / too sick / go / school / yesterday.
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7- Ba /delighted / receive / his close friend`s letter.
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8-The children / happy / get / toys / Santa Claus / Christmas.
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9- I/ delighted/ receive/ your message.
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10- She/ smart enough/ answer/ all the questions.
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11- He/ anxious/ wait for/ the test results.
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12- We/ happy/ receive/ a lot of presents from our grandparents.
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IV. Write:
1.They will show the time machine to the public when they finish it.
The time machine _______________________________
2. Keeping the environment clean is very important.
It’s _______________________________
3. To see this film is very boring.
It’s _______________________________
4. To understand these lessons is not easy.
It’s _______________________________
5. People recycle old car tires to make shoes and sandals.
Old car tires _______________________________
6. People cut the bottles into small pieces.
The bottles _______________________________
7. People mix the small pieces with certain chemicals.
The small pieces _______________________________
8. People heat the mixture into pasty liquid.
The mixture _______________________________
9. People blow the liquid into new bottles.
The liquid _______________________________
10. People recycle used plastic things to save natural resources.
Used _______________________________
11. We are going to clean the environment. We are ready.
We are _______________________________
12. Keeping people from littering is very difficult.
It is  _______________________________
13. She must empty the kitchen garbage. She is not pleased.
She is _______________________________
14. Being able to live in a clean environment is lucky.
It is _______________________________
15. They hear about the plan to collect the used boxes. They are surprised.
They are _______________________________
ĐÁP ÁN
I. Change sentences into the passive (Present simple):
1 - The letters are delivered by Mr. Hai every day.
2 - The tickets are often bought at the box office.
3 - Their homework is finished before bed time.
4 - Our exercises are corrected today.
5 - The shows music are often watched on TV.
6 - A written test is done today.
7 - The Picasso`s exhibition is always seen.
8 - The streets are cleaned everyday.
9 - Many accidents are caused by careless driving.
10 - The river bank is covered by weeds.
II. Change sentences into the passive ( Past simple).
1 - That novel was written in