School students _____ smoke because it is bad for their health and it is against the law.

题型：单选题题类：常考题难易度：普通

初中英语牛津译林版八年级下册Unit 5 Good manners Period1 (Comic strip & Welcometo the unit)同步练习

A、needn't B、couldn't C、shouldn't D、may not

举一反三

— No, you ________.

— Not yet, but he __________ be here soon. He usually is on time.

—Sorry, I ________. I have to finish my homework first.

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