Ifyouwantsomethingyou'veneverhad,youmustbewillingtodos...

问题详情：

 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

知识点：现在完成时及其被动式

题型：选择题