2. 外语学习
  3. I think I must_____this book because I bought it two years ago. A. read B.be reading

I think I must_____this book because I bought it two years ago. A. read B.be reading

tuzvo 2013-11-2 891

最新回复 (1)
  • uguh 2013-11-2
    引用 2楼
    由于这一句表述的是过来的事情，书是两年前买的，must have done 表肯对过来的一定推测，所以选C。
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