根据句意及首字母的提示，补全单词。

1.  The old man is not as a_____ as he was.

2.  He headed t    ___the station, he would leave for Shanghai.

3.  I looked down the hall b_____, and there was nobody in it.

4.  Its price has r_____ greatly, so I can't afford it.

5.  He's my friend. we shall not let such a small matter d      __us.

在农电生产系统中，一个月计划可以对应（）周计划。

A.1个

B.2个

C.3个

D.不受限制