题目内容
9.You ________ stop when the traffic light turns red.( )A. | can | B. | had better | C. | need | D. | must |
分析 当红灯亮了的时候,你必须停下来.
解答 答案:D.can能,会;had better最好;need需要;must一定,必须.根据when the traffic light turns red,可知当红灯亮了的时候,你必须停下来.这是一种强制性的规定,没有选择的余地,must一定,必须.故选D.
点评 本题考查了情态动词的用法.解答时注意must的用法:一定,必须,表示非做不可的事情.
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