VIII. Grammar. Passive Voice

a. Change sentences from the active to the passive.

1. They grow coffee in Kenya.

2. They publish The Times newspaper in London.

3. They transport oranges from Valencia to Germany in special crates.

4. The shark ate the man.

5. The arsonist started the fire.

6. The police took him away.

7. They didn't punish him for what he did.

8. Did The president give John an award?

9. Everyone saw them

10. The police brought him here.

11. The firefighters didn’t save the women.

12. All the students understood the explanation.

13. Who stole my wallet?

14. A snake bit him.

15. Thomas and his brother built that house.

b. Choose the correct verb active or passive.

1. These cars produce / are produced in Japan .

2. Alan teaches / is taught Geography.

3. German is spoken / speaks in Austria.

4. Lots of houses destroyed / were destroyed by the earthquake .

5. Henry Ford was invented / invented the assembly line.

6. Somebody cleans / is cleaned the office every day.

7. Somebody is sent/ sends emails.

8. The grass cuts / is cut every day.

9. Paul found / was found the key.

10. The computer fixed / was fixed yesterday.

11. Who painted / was painted The Mona Lisa?

12. My wallet store / was stolen.

c. Put the verbs in brackets into correct passive tense.

1. Was Tom pleased with the newspaper article about him?--No. He was angry because his name ... (spell) wrong.

2. Did you buy that picture?--No, it ... (give) to me for my birthday.

3. Do your cats eat a lot?--No. They ... (feed) once a day, that`s all.

4. She …(be) born in a village in the south of Spain.

5. Are you going to buy a wedding dress?--No. My dress ... (make) by my mother.

6. It was a really interesting message. It … (write) on the sand with a stick.

7. I am going to a party tonight. I ... (invite) by my friend.

8. Have you arranged the party?--Yes. All invitations ... (send).

9. They are building a new sports centre in town.--I know. It ... (open) next month.

10. Did you make the coffee when you got to work?--No, it ... (already/do).

11. For the past few days I have been working in Jack's оffiсе, as mу own office … (redecorate).

12. The tables … (set) before the restaurant opens tonight.

13. I have a beautiful jumper that … (knit) by my grandmother.

14. This photo … (take) by my grandfather when I was five.

15. Tea … (make) from the leaves of the tea plant.

16. One day all the work … (do) by the robots.

17. We did a lot of work for the school but we … (pay).

18. The letter H … (not/pronounce) in French.

19. The people next door disappeared six months ago. They …(not/see) since then.

20. My car has disappeared! It … (steal)

UNIT 5

The Law of Conservation of Mass

I. Lead-in

Answer the following questions.

1. What is a chemical law?

2. What is the difference between mass and weight?

3. What does the Law of Conservation of Mass refer to?

4. Is the law of Conservation of Mass applied to physical changes?

5. How is the law of Conservation of Mass applied to everyday life?

a. Match the words with their definitions.

1. Give (something, especially money) in order to help achieve or provide something	a. reaction
2. The process of burning something	b. to contribute
3. Allow (something) to move, act, or flow freely	c. combustion
4. A chemical process in which substances act mutually on each other and are changed into different substances, or one substance changes into other substances	d. to release
5. to change or transform	e. to alter