Chuyển các câu sau thành câu bị động:
1. Why didn't they help him?
2. How many games has the team played?
3. Where do people spek English?
4. Who are they keeping in the kitchen?
5. How can they open the safe?
6. What books ảe people reading this year?
7. How did the police find the lost man?
8. Who look after the children for you?
9. How long have they waited for the doctor?
10. What time can the boys hand in their paper?
11. Who lent you this book?
12. How many marks does the teacher give you?
13. We shall have to tow the car to garage?
14. Visitors must leave umbrellas and sticks in the cloak room.
15. You will have to pull down this sky craper when you have not complied with the town planning regulations.
16. We can't exehange articles whick customers have bought during the sale.
17 They ought to report the accident to the police.
18. You need tofinish the work before 12 o' clock
19. He doesn't need to repaint the car.
20. My brother used to play soccer when he was young.
