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
2) knew
3) had broken
4) left или had left
5) finished
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: