精选优质文档-倾情为你奉上过去进行时态练习题一、用动词的适当形式填空1. While we _ (wait) for the bus, a girl _ (run) up to us.2. I _ (telephone) a friend when Bob _ (come) in.3. Jim _ (jump) on the bus as it _ (move) away.4. We _ (test) the new machine when the electricity _ (go) off.5. She _ (not want) to stay in bed while the others _ (all, work) in the fields.6. While mother _ (