Stay awake！You should know that it ________to sleep in class.
A．doesn’t permitB．is not permitted
C．will not be permittedD．was not permitted
B
考查時(shí)態(tài)及語(yǔ)態(tài)，保持清醒！你應(yīng)該知道課上不允許睡覺(jué)。根據(jù)語(yǔ)境應(yīng)用一般現(xiàn)在時(shí)態(tài)，且表示被動(dòng)，所以選C。
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