№1
1.used to go
2.were doing
3.hadn't tell
4.was raining
5.had left
6.woke up
7.went
8.did you use to sing
№2
1.saw
2.were not watching
3.used to go
4.didn't realize
5.was cycling
6.spent
№4
1.she had eaten .....
2.+
4.he was working......
5.+
6.did you buy
№5
1.was still attending
2.had
3.woke up
4.was chasing
5.had stollen
6.happened
7.didn't listen
8.had  dreamt
9.did
№3
1.After Steven had gradued from University , he worked  ......
2.I had never been aboard before.
3.Jeans didn't use to be ,as popular before, as now.
5.Suzzane walked into the room , when they were fighting.