问题描述：
be not allowed to do 是否等于must not
有一道这样的题：
选择与画线部分意思相同的选项：l'm sorry!you are not allowed to enter this building(are not allowed to画线）
A.mustn't B.won't C.may not D.can't
有一道这样的题：
选择与画线部分意思相同的选项：l'm sorry!you are not allowed to enter this building(are not allowed to画线）
A.mustn't B.won't C.may not D.can't
问题解答：
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