Look at this!It's broken now!You have been careful!A.couldB.mustC.wouldD.sho
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Look at this!It's broken now!You ________ have been careful!
A.could
B.must
C.would
D.should
试题答案
D
从语境来看，东西已经坏了，你“本应该细心的”，should have done表示“本应该做某事，但是没有做到”的意思。