—Do you think the fine weather will keep up?—.A. I believe itB. I don’t believe itC. I bel

问题补充：

—Do you think the fine weather will keep up?

—.

A. I believe it

B. I don’t believe it

C. I believe not so

D. I don’t believe so

答案：

A. I believe it

B. I don’t believe it

C. I believe not so

(答案→)D. I don’t believe so

解析：I don’t believe so.=I don’t think so.=I believe/think not.so可用来代替宾语从句，常置于一些表示看法、意见的动词believe/think/suppose/hope,etc.之后，用not表否定。