题目内容

You ______ wear sports shoes when you climb a mountain.
A．can’tB．shouldn’tC．mustn’tD．have to
D
考查点：情态动词的用法。解题思路：根据句意：爬山的时候你不得不穿运动鞋。前三个选项句意不通顺，故选D。
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