单项选择题

Please remember to close all the windows ______ you leave.

A． while
B． because
C． before
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单项选择题
Excuse me for calling you so ______ in the evening.
A． late
B． later
C． lately
单项选择题
Tony was ______ honest boy. He found a wallet at ______ school gate and gave it to its owner.
A． fain; the
B． an; the
C． an;/
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