IV. Put the verbs in brackets in the desired shape.
1. Ann (to wait) for me when I (to arrive)
2. Jim (to play) tennis since 2 o’clock.
3. Before the train came we (to wait) for 2 hours.
4. By this time tomorrow you (to receive) the answer.
5. This supermarket (to work) 24 hours.
6. Jane (to cook) a cake for the dinner when we came.
7. They (to paint) the wall since the morning.
8. It (to rain) now.