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.

贷款风险的预警信号系统中关于经营状况的信号不包括（）。

A．丧失一个或多个财力雄厚的客户 

B．关系到企业生产能力的某客户的订货变化无常 

C．投机于存货，使存货超出正常水平 

D．应收账款余额或比例激增