Look at the notice . You are not allowed the gymnasium without permission.A. to enterB. e

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(答案→)A. to enter
B. enter
C. entering
D. for entering
解析：考查allow用法。固定词组allow sb to do sth允许某人做某事；本题是该句型的被动语态。句意：看看通知，未经允许，你是不被允许进入体育馆的。故A正确。