Rewrite the following sentences in passive voice

`1`.Our letter has not been answered by him.

`-`BĐ thì HTHT:S + has/have (not) + been + V3/ed+(by O)+(adv of time)

`2`.The contract was not signed by her.

`-`BĐ thì QKĐ:S + were/ was (not) + V3/ed+(by O)+(adv of time)

`3`.The door is opened by him.

`-`BĐ thì HTĐ:S + am/is/are (not) + V3/ed+(by O)+(adv of time)

`4`.The table is set by us.

`-`BĐ thì HTĐ:S + am/is/are (not) + V3/ed+(by O)+(adv of time)

`5`.A lot of money is paid by her.

`-`BĐ thì HTĐ:S + am/is/are (not) + V3/ed+(by O)+(adv of time)

`6`.A picture is drawn by me.

`-`BĐ thì HTĐ:S + am/is/are (not) + V3/ed+(by O)+(adv of time)

`7`.Blue shoes are worn by them.

`-`BĐ thì HTĐ:S + am/is/are (not) + V3/ed+(by O)+(adv of time)

`8`.You are not helped by them.

`-`BĐ thì HTĐ:S + am/is/are (not) + V3/ed+(by O)+(adv of time)

`9`.The book is not opened by him.

`-`BĐ thì HTĐ:S + am/is/are (not) + V3/ed+(by O)+(adv of time)

`10`.The letter is not written by you.

`-`BĐ thì HTĐ:S + am/is/are (not) + V3/ed+(by O)+(adv of time)

`11`.Are you picked up by your mum?

`-`BĐ thì HTĐ(?):am/is/are + S+V3/ed+(by O)+(adv of time)

`12`.Is the thief caught by the police officer?

`-`BĐ thì HTĐ(?):am/is/are + S+V3/ed+(by O)+(adv of time)

8. A flight had been booked by Heena.

9. Our letter has not been answered by him.

10. The contract was not signed by her`.`

11. The door is opened by him.

12. The table is set by us.

13. A lot of money is paid by her.

14. A picture is drawn by me.

15. Blue shoes are worn by them.

16. You are not helped by them.

17. The book doesn’t get opened by him.

18. The letter is not written by you.

19. Are you picked up by your mum`?`

20. Is the thief caught by the police officer`?`

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Hiện tại đơn

S + am/is/are + V3/ed + (by + S)

Hiện tại tiếp diễn

S + am/is/are + being + V3/ed + (by + S)

Hiện tại hoàn thành

S + have/has + been + V3/ed + (by + S)

Hiện tại hoàn thành tiếp diễn

S + have/has been + being + V3/ed + (by + S)

Quá khứ đơn

S + was/were + V3/ed + (by + S)

Quá khứ tiếp diễn

S + was/were + being + V3/ed + (by + S)

Quá khứ hoàn thành

S + had + been + V3/ed + (by + S)

Quá khứ hoàn thành tiếp diễn

S + had been + being + V3/ed + (by + S)