A) the exercises were very difficult, nobody (know) what to do with them. 1)had known 2)had knew 3)known 4)knew b)everybody (leave) the house by the time i came home. 1)leaved 2)left 3)had left 4)had leaved

A) The exercises were very difficult, nobody knew what to do with them. (4)
B) Everybody had left the house by the time I came home. (3)

1 The dinner was made to me by my mother yesterday.

2 The flowers are watered by me every day.

3 . A new bicycle will be bought by us.

4. The letters are delivered by a postman everyday.

1 has painted

2 has been written

3 has been translated

4 has just explained

5 have learnt

6 has been built

1. He has just bought a newspaper.

2. Has a TV set has been just switched off.

3. He has already answered the question.

4. The words have been just written on the blackboard.

5. We have already spoken about this.

6. All answers have been already given.

7. It has been just written about in the internet.

8. I have already seen (watched)this film.

9. I have been told nothing about this.

10.All agreements have been already signed.

1.  1) has broken

   2) has been written

   3) has been translated

   4) has explained

   5) have learnt

   6) has been built

2.  1) I have just bought a newspaper.

   2) The TV has been turned off.

   3) He has already answered the question.

   4) The words have just been written on the board.

   5) We have already talked about it.

   6) All the answers have already been given.

   7) It has just been said on the radio.

   8) I have already seen this film.

   9) I have been told nothing about it.

   10) All the sentences have already been written.