Question

--- Are your shoes expensive?   --- No, I only _ __ five dollars on them.
A. used        B. cost               C. spent

Answer 1

C

試題分析：句意：你的鞋子貴嗎？不貴，我只花了五美元買他們。spend人作主語，賓語是時間和金錢，結構是人+spend+時間/金錢+on+名詞，人+spend+時間/金錢+(in)V-ing; cost,物作主語，只能花費金錢，根據結構，故選C。