用所给词的适当形式填空。
1. The film is very _____ (surprise) and I'm( surprise) at it．
2. She _____ (buy) some flowers for her mother yesterday.
3. While I was _____ (shop), I saw my best friend.
4. The train usually _____ (leave) the station at ten o'clock in the morning.
5. I _____ (shop) in a supermarket when you called me up.
6. It's _____ (usual) for the trees to flower so early.
7. How about _____ (go) for a drive?
8. Listen! Someone _____ (knock) at the door.
9. What _____ you _____ (do) at 9:00 am. yesterday?
10. I _____ (wait) for the bus this time yesterday.
