Ifyouwantsomethingyou'veneverhad,youmustbewillingtodos...

問題詳情：

 If you want something you've never had, you must be willing to do something you      .

  A. will never do      B. never did            C. have never done      D. had never done

【回答】

C

知識點：現在完成時及其被動式

題型：選擇題