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

試題分析：句意：我們現(xiàn)在可以離開教室嗎？不，你們不能，直到下課鈴響了，才可以離開。can’t表示不能夠，用于回答may的提問，be supposed to do sth應(yīng)該做某事，故選D
點(diǎn)評(píng)：情態(tài)動(dòng)詞是中考的必考語言點(diǎn)。情態(tài)動(dòng)詞表必要性時(shí)用must(必須)與don’t have to / needn’t(不必要)；表推測(cè)時(shí)用must (肯定、一定)與 can’t/couldn’t (不可能)；表請(qǐng)求和許可時(shí)can/may(可以、能夠)與can’t/mustn’t(禁止、不許)。
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