Chuyển sang câu bị động

I. Change these questions into passive voice.
1. Do scientists do experiments?
→ ________________________________________________________________________
2. Is Mary wearing a new skirt at the moment?
→ ________________________________________________________________________
3. Where did they leave their bags?
→ ________________________________________________________________________
4. Is the cat chasing the mouse?
→ ________________________________________________________________________
5. Have they asked the actress personal questions?
→ ________________________________________________________________________
6. Can Mr Jones teach English?
→ ________________________________________________________________________
7. Are they going to feed the baby?
→ ________________________________________________________________________
8. Did Peter find the missing key?
→ ________________________________________________________________________
9. Have they sold their house?
→ ________________________________________________________________________
10. How did he find the solution to the problem?
→ ________________________________________________________________________
11. Why is Peter making dinner today?
→ ________________________________________________________________________
12. Can you show me your homework, please?
→ ________________________________________________________________________
13. Will they have repaired your car by Tuesday?
→ ________________________________________________________________________
14. Were the children playing football when they arrived?
→ ________________________________________________________________________
15. How many stamps have you collected?
→ ________________________________________________________________________
16. Are mum and dad paying the bill now?
→ ________________________________________________________________________
17. Will they give you money for the trip?
→ ________________________________________________________________________
18. Did they demolish the old building last week?
→ ________________________________________________________________________
19. Has Sheila opened the window?
→ ________________________________________________________________________
20. Does your mum do all the housework?
→ ________________________________________________________________________
21. Have the Browns built this large house?
→ ________________________________________________________________________
22. Did a jelly fish sting her sister while she was swimming?
→ ________________________________________________________________________
23. Did they give her a nice present?
→ ________________________________________________________________________
24. Is Jane singing a new song?
→ ________________________________________________________________________
25. Did the storm destroy the house?
→ ________________________________________________________________________
26. Does she water the flowers every day?
→ ________________________________________________________________________
27. Does the headmaster call his parents to the office?
→ ________________________________________________________________________
28. Will Ben direct the show?
→ ________________________________________________________________________
29. Had the dog broken the window panel?
→ ________________________________________________________________________
30. Were they interviewing her for the job?
→ ________________________________________________________________________