用所给动词的正确形式填空
1. Be careful! the baby (sleep).
2. Our physics teacher said light (travel) faster than sound.
3. Mary (go) to the zoo once a month.
4. Jim (live) here for ten years.
5. There (be)a football match next week.
6. By the time we got to the station the train ( leave) .
7. What you (do) at this time yesterday?
8. I already ( finish) my homework, so I can play now.
9. No one knows what (happen) in one hundred years.
10. Many man-made satellites . (send) up into space so far.
