A mistake have been made on our bill. We didn’t order any fish today.A．shouldB．wouldC．couldD．must 题目和参考答案——青夏教育精英家教网—

题目内容

A mistake ______ have been made on our bill. We didn’t order any fish today.

A．should

B．would

C．could

D．must

试题分析：考查情态动词。句意：我们的账单一定是出错了，我们没有要鱼。Should have done本应该；could have done本可以；must have done一定是。故选D。

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