单选题 By the end of last year we ______ over 2,000 English phrases.
  • A. have learned
  • B. learned
  • C. will have learned
  • D. had learned


【正确答案】 D
【答案解析】本题考查动词的用法。时间状语中包含by the end of，用完成时；包含last year，用过去式。该句意为：到去年底为止，我们已经学习了超过2000个英语短语。