13. Are big cakes being made by her for the party?
14. Does the test have to be finished before ten?
15. Has your homework been finished by you?
16. Where is English spoken by people?
17. Who is being kept in the kitchen by them?
18. What time will this English test be finished by Tom?
19. How can this safe be opened by them?
20. How was the lost man found by the police?
BT 2. Câu chuyển với động từ tường thu:
1. It is believed by some people that 13 is an unlucky number.
2. It is said that John is the brightest student.