试题:
How can you expect to get anything____ you never give?
A.in caseB.even if
C.unlessD.when

答案:

我来补答
 D
  in case万一;even if即使;unless如果不,除非,相当于if...not;when考虑到,既然。句意为:既然你从不给予,你又怎么能期望得到呢?
 
 
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这些题目你会做吗?