1. They painted those pictures last week. 

Those pictures did painted by them last week.

2. Someone cut down the tree in the garden. 

The tree in the garden is cut down (by someone).

3. They wrote that reading long ago. 

That reading is written by them long ago.

4. They carried the animals to circus by trucks.

The animals are carried to circus by trucks.

5. John washed this car yesterday.

This car is washed by John yesterday.

6. Did they give you these tickets? 

Did these tickets given you by them?

7. No one saw him at school yesterday.

He isn't sawn (by no one) yesterday .

8. Did they send the monkeys to the circus?

Did the monkeys sent to the circus by them?

9. Did the posters attract many children in town? 

Did the posters attracted by many children?

10. They found the book in his bag. 

The book are founded by them in his bag.

11. They were cutting grass when it began to rain

Grass did cutting by them when it began to rain.

12. People didn’t use much of it effectively.

Effectively didn't use much of it (by people).

13. Did they cook fish for the dinner? 

Did fish cooked by them for dinner?

14. People were searching the shop when the keeper arrived?

The shop is searched (by people) when the keeper arrived.

15. They did the work yesterday.

The work did by them yesterday.

Chú ý: Bạn sử dụng cấu trúc câu bị động ở hiện tại đơn và quá khứ đơn.

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