4.
1)They met in 1985.
2)I will ell you what happened to me on weekend.
3)She was born on 29th February.
4)Jack, who is only three, is afraid to stay alon at night.
5)We are leaving for ten minutes.
5.
1)To blow up
2)To turn down
3)To pay for
4)To take care of
5)To wake up
6.
1)To be-was/were-been
2)To open-opened
3)To bring-brought-brought
4)To watch-watched
5)To come-came-come
Удачи!