单选题 I can think of many cases ______ students obviously knew a lot of English words and expressions but couldn't write a good composition.
  • [A] why
  • [B] which
  • [C] as
  • [D] where


【正确答案】 D
【答案解析】题意是“我能想到很多这样的例子：学生虽然明明会不少英语单词和短语，但却写不出好文章”。cases后是一定语从句，要用where引导，意为in those cases。答案为D。