用所给词的适当形式填空。
1. Tom's brother ___________ (fall) down the stairs yesterday.
2. Her sister and brother never ___________ (go) to bed before 10: 00 pm.
3. Can he ___________ (play) basketball very well?
4. She ___________ (look) hungry, so her mother ___________ (give) her some food an hour ago.
5. ___________ (not) go to bed too late.
6. She isn't going to ___________ (read) in bed.
7. This school begins ___________ (class) at 7: 45.
8. Simon ___________ (answer) the phone now.
9. The children are ___________ (make) the paper boats.
