Question

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

-May we leave the classroom now? -No, you ______. You ______ to leave until the bell rings. A．mustn’t, are allowed B．don’t have to, are supposed C．needn’t, aren’t allowed D．can’t, aren’t supposed

Answer 1

D
考察情态动词否定回答及allow和suppose用法.
mustn’t,禁止don’t
have
to,
不必needn’t,不必can’t不能.be
supposed
to应该,被期望做某事,be
allowed
to
do
sth
被允许做某事.根据题意,我们现在可以离开房间了吗？——不，你们不能。你们铃响之前别想
离开。选D。