1. The train might be late today.(用perhaps或maybe 改写) _____the train_____be late today. 2. You must get to school before six tomorrow.(用have to改写) You_____ to school before six tomorrow. 3. lt"s going to rain. Maybe we have to stay at home.(改为同义句) It"s going to rain. We_____ stay at home. 4. I"d like to work in a hospital when I grow up.(改为同义句) I"m going to _____when I grow up. 5. I have to spend a few weeks on my model plane.(改为同义句) I have to spend a few weeks_____ _____my model plane.