题目内容
8.All passengers wear seat belts during take-off.| A. | can | B. | must | C. | ought | D. | may |
分析 所有的乘客在飞机起飞时一定都要系上安全带.
解答 答案:B.
can能,会;must一定;ought应该;may可以.根据 during take-off,可知飞机起飞时一定都要系上安全带,这是必须遵守的.must一定.故选B.
点评 本题考查了情态动词的用法.注意区分辨别句意以及所给选项的意思.
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