1. I'll wait until he (finish) finishes his novel.
2. When you (came) come back, he has already (buy) bought a new house.
3. Don't come until I (finish) have finished lunch.
4. I (hope) hope it (stop) will have stopped raining by 5 o'clock this afternoon.
5. The river (not begin) will not begin to swell until some rain (fall) falls .