IV. Put the verb in the correct form, Past Continuous or Past Simple.
1. Carol broke (break) her arm last week.
2. It ...(happen) when she ... (paint) her room. She ... (fall)
of the larder. 3. The train ... (arrive) at the station when Paula
(get) off. 4. Two friends of hers, John and Jenny, ... (wait) to
meet her. 5. Yesterday Sue ... (walk) along the road when she
(meet) Jim. 6. He ... (go) to the station to catch a train and he ...
(carry) a bag. 7. They ... (stop) to talk for a few minutes.
2. Doctor had written out the recipes five minutes before I came.
3. We had been looking for a drugstore for about 20 minutes before we found it.
4. I had been reading the medical encyclopedia for a few minutes before I found the desired information.
5. My son had not been waiting even for fifteen minutes when the doctor came.
6. Doctors had worked on this issue for three years before they went on a world scientific conference.