Question

1.The workers built this house in 1998
-> This house .......................................................................................................
2. Hoa bought the flowers in the market yesterday.
-> The flowers ..........................................................................................................
3. They gave the winner a nice prize.
-> The winner ............................................................................................................
4.The policeman asked her a lot of questions.
-> She.............................................................................................................
5. Nobody showed him the way to the club.
-> He .............................................................................................................
6. He didn't type the letter last night
-> The letter .............................................................................................................
7. A man returned the keys to me.
-> The keys ................................................................................................
8. Nam and his friends swept the street.
-> The street .......................................................................

Answer 1

1.The workers built this house in 1998
-> This house was built in 1998.
2. Hoa bought the flowers in the market yesterday.
-> The flowers were bought in the market by Hoa yesterday.
3. They gave the winner a nice prize.
-> The winner was given a nice prize.
4.The policeman asked her a lot of questions.
-> She was asked a lot of questions by the policeman.
5. Nobody showed him the way to the club.
-> He wasn't shown the way to the club.
6. He didn't type the letter last night
-> The letter wasn't typed by him last night.
7. A man returned the keys to me.
-> The keys were returned to me by a man.
8. Nam and his friends swept the street.
-> The street was swept by Nam and his friends.

Answer 2

1 ... was built by the workers in 1998

2 .... were bought in the market by Hoa yesterday

3 .... was given a nice prize

4 ... was asked a lot of questions by the policeman

5 ... wasn't shown the way to the club

6 ... wasn't typed last night

7 .... were returned to me by a man

8 ... was swept by Nam and his friends

Answer 3

1.The workers built this house in 1998
-> This house was built by the workers in 1998.
2. Hoa bought the flowers in the market yesterday.
-> The flowers were bought in the market by Hoa yesterday.
3. They gave the winner a nice prize.
-> The winner was given a nice prize. 
4.The policeman asked her a lot of questions.
-> She was asked a lot of questions by the policeman.
5. Nobody showed him the way to the club.
-> He wasn't showed the way to the club.
6. He didn't type the letter last night
-> The letter wasn't typed last night.
7. A man returned the keys to me.
-> The keys were returned to me by a man.
8. Nam and his friends swept the street.
-> The street was swept by Nam and his friends.