Question

改为被动语态

Answer 1

7. It needn't to be done by you now.
8. The work can be done by us today.
9. His homework was being done by him at this time yesterday.
10. A model ship is being made by my brother now.
11. Football was played by us after school yesterday .
12. The Great wall is known by people all over the world.
13. The child was saved by doctor last night.
14. The black bike wasn't bought by my father.
15. The work has been already finished by them.

追答

继续
16. The letter has to be written in French by him.
17. The workers are made to work 12 hours a day by the man.
18. The America land was discovered by Christopher Columbus.
19. The new road is being repaired by them now.
20. The children are given a piano lesson once a week by him.

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