Question

The shopkeeper did not want to sell for ________ he thought was not enough.

1. A.
   where
2. B.
   how
3. C.
   what
4. D.
   which

Answer 1

C
解析：根据句子结构判断，for后的从句中缺少主语，因此只能用what．
命题立意：本题考查连接词的用法．遇到这样的问题时，应分清句子结构．