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let's hurry. they ________ be waiting for us. A.must B.could C.can D.would

分类: 作业答案 • 2022-07-15 15:02:39

问题描述：

let's hurry. they ________ be waiting for us. A.must B.could C.can D.would

答

A must
must be 表示推荐,猜测,意思是一定在做什么.