题目内容


．—What’s the matter with the man hanging his head there?
—Well, if you _______ know, he was caught stealing my bike.
A．mustB．mayC．canD．shall
A
考查情态动词must的用法，这里表示“偏要”，句意：--那边低着头的男子怎么了？--如果你偏要知道的话，他被抓住偷我的自行车。选A。
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