Question

Mr. Duncan raised an unnecessary question __________ he then failed to find an answer

1. A.
   to which
2. B.
   for which
3. C.
   with which
4. D.
   by which

Answer 1

A
試題分析：句意：鄧肯先生提出了一個(gè)沒有必要的問題，他后來也沒有找到問題的答案。這里是定語從句，先行詞是question，an answer to an unnecessary question問題的答案，這里需用介詞to，which在這里作介詞的賓語，故選A。
考點(diǎn)：考查定語從句的用法。