1.While we (waswaiting) for the bus,a girl (ran) up to us.
2.I (was telephoning) a friend when Bob (came) in.
3.Jim (jumped) on the bus as it (was moving) away.
4.We (were testing) the new machine when the electricity (went) off.
5.She (didn't want) to stay in bed while the others (were all working) in the fields.
6.While mother (was putting) Cathy to bed,the door bell (rang).
7.I (was having) my breakfast at half past six yesterday morning.
8.Mary (was going) over her lessons from six to seven last night.John and peter (were doing) the same thing.
9.What (were) you (doing) at that time?We (were watching) TV.
10.Was your father at home yesterday evening?Yes ,he was.He (was listening) to the radio.