Put these sentences into passive voice:
1. What did he leave for his relatives when he passed away?
What was left for his relatives when he passed away?
2. How many games has the team played?
How many games have been played by the team?
3. When did Columbus take corn to Europe? (xem lại đề câu này giúp mình)
4. When did they discover aspirin from trê bark?
When was aspirin discovered from tree bark?
5. How can they take this Christmas tree home?
How can this Christmas tree be taken home?
6. What are you discussing?
What is being discussed?
7. How did the police find the lost man?
How was the lost man found by the police?
8. Who looked after the children for you?
By whom were the children looked after?
9. How long have they waited for the doctor?
How long has the doctor been waited for?
10. What time can the boys hand in their papers?
What time can the boys' papers be handed in?
6. we had had a look around the shops, we had snack
7. worked than the light failed
had they worked than the light failed
had they worked when the light failed
8. happier than ever
9. I went to the zoo last year, I hadn't seen a real tiger before
14. they had got ready, they went out for dinner
15. Andrew found the test very easy, he had done it
16. we were watching television, a burglar broke into the house
17. After the stewardess had served lunch for passengers, she sat down
18. arriving at the airport, I saw that wanted man
19. came home, he had had lunch in this restaurant
20. had done my homework, I went to bed
21. because we missed the bus
22. had told him off, I realized I was wrong
23. câu này sai đề nha, ko viết lại với by the time được
24. had considered what to study, I decided to major in Math
25. After she had written a letter, she went to bed
26. Before he bought the radio, he had checked the price
27. was skiing in Switzerland, he met his old friend Ken