1.It (rain) is raining hard. We can't do anything until it (stop) stops.
2.Last night we (watch) were watching TV when the power (fail) failed.
3. That evening we (stay) stayed up to talk about the town where he (live) had lived for some years.
4.I (sit) sat down for a rest while the shoes (repair) were being repaired.
5. Half way to the office Paul (turn) turned round and (go) went back home because he (forget) forgot to turn the gas off
6.London (change) has changed a lot since we first (come) came to live here
7.While we (talk) were talking on the phone the children (start) started fighting and (break) broke a window.
8.He used to talk to us for hours about all the interesting things he (do) has done in his life.
9.You know she (stand) has stood looking at that picture for the last twenty minutes.
10.I ( spend) have spent a lot of time travelling since I (get) got this new job.
11. When we (be) were at school we all (study) studied Latin.
12.When I (meet) met him, he (work) had worked as a waiter for a year.
13.After he (finish) had finished breakfast he (sit) sat down to write some letters.
14.She (have) has a hard life, but she's always smiling.
15.I think Jim (be) will be out of town.