Question

1) I went to see my friend, but she (be) on holiday.

was

were

have been

had been

2) The exercises were very difficult, nobody (know) what to do with them.

known

knew

had knew

had known

3)I paid for the window because my son (break) it.

have broken

break

had broken

broke

4)Everybody (leave) the house by the time I came home.

left

leaved

had leaved

had left

5)She (finish) breakfast and left the house.

finish

finished

have finished

had finished

Answer 1

1) was
2) knew
3) had broken
4) left или had left
5) finished

Answer 2

1) I went to see my friend, but she (be) on holiday.

was

2) The exercises were very difficult, nobody (know) what to do with them.

knew

3)I paid for the window because my son (break) it.

had broken

4)Everybody (leave) the house by the time I came home.

had left

5)She (finish) breakfast and left the house.

finished

Объяснение: