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  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:942

--Jack fell off the ladder yesterday, but he is all right now.
--What a lucky dog! He ______ himself badly.

A.should injure B. could have injured
C.should have injured D.might injure
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Jackfellofftheladderyesterday,