题目内容：

Which one is right of the following sentences?
A.I don't think it is a free choice.
B.I think it is not a free choice.
C.I didn't think it is a free choice.
D.I thought it wasn't a free choice.

优质解答

A.I don't think it is a free choice.（正确）B.I think it is not a free choice.（think后面的宾语从句不用否定式.）C.I didn't think it is a free choice.（前后时态不一致.）D.I thought it wasn't a free cho...