题目内容

—Bad news?
—If you ______ know, Li Na got defeated again in the first round!
A．canB．willC．shallD．must
D
考查情态动词特殊用法。Must 必须；偏偏，非得；句意：—坏消息？—如果你非要知道，李娜又一次在第一轮被打败。
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