Question

1.he caught the thief.
2.we have bought the car.
3.i am writing a letter.
4.they have been cleaning.
5.they don't help us.
Change passive voice

Answer 1

1. The thief was caught by him
2. The car has been brought by us
3. A letter is being written by me
4.
5.

Answer 2

(1)the thief was caught by him.
(2)the car had broughten by us.
(3)the letter was written by me.
(4)cleaning had been done by them.
(5)we didn't help by them.

hope it will help you.