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  • 科目:英语
  • 题型:单选题
  • 难度:容易
  • 人气:1531

------- Now you can see how serious the situation is !
-------- Yes.  We _____something before it got so bad .

A.should do B.must do C.must have done D.ought to have done
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Nowyoucanseehowseriousthesitua