—May we leave the classroom now?—No, you ________. You ________ to leave until the bell rings .

题型：单选题题类：常考题难易度：普通

新课标（Go for it）九年级英语全册:Unit10测试卷

—May we leave the classroom now?

—No, you ________. You ________ to leave until the bell rings .

A、mustn't; are allowed B、needn't; aren't allowed C、don't have to; are supposed D、can't; aren't supposed

举一反三

—On a ropeway.

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