Question

She seemed________ what I said. I had________ it again.

A. to understand; to be saying 　　 B. didn’t understand; said

C. not to have understood; to say D. to have understood; been said

 

Answer 1

答案：C
提示：

sb seem后跟 to do，不定式的否定形式是not to do，根据句子的意思可知是过去的事情，不定式的完成式表示过去。