— Must the students were school uniforms on weekends?— No, they .

题型：单选题题类：常考题难易度：容易

四川省成都七中实验学校2017届九年级下学期3月月考英语试卷

— Must the students were school uniforms on weekends?
— No, they .

A、mustn't B、may not C、don't have to

举一反三

He{#blank#}1{#/blank#} {#blank#}2{#/blank#}a strange number yesterday．

—Why not _______ there for a change?

Please {#blank#}1{#/blank#} to take your ID card before arriving at the train station.

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