A mistake ______ have been made on our bill. We didn’t order any fish today.
A mistake ______ have been made on our bill. We didn’t order any fish today.
A. should B. would C. must D. can
【答案】C
【解析】句意：我们的帐单一定弄错了。我们今天没点鱼肉。
A. should应该；B. would会，将；C. must必须；一定；D. can能，会。根据下文We didn’t order any fish today.可知这里是一定已经出错了，must have done表示一定已经做了……。根据题意，故选C。
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