We were looking for you all this morning．You office without a word．A.mustn’t lea
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We were looking for you all this morning．You ________ office without a word．
A.mustn’t leave
B.shouldn’t have left
C.couldn’t have left
D.needn’t leave
试题答案
B
句意为：“我们找了你一个上午，你不应该一声不响就离开了办公室。”shouldn’t have done表示本不该做而做了某事。