You cannot take back your words _________ they are out of your mouth.A．beforeB．w_刷题宝

题干

You cannot take back your words _________ they are out of your mouth.

A．before

B．whether

C．once

D．while

上一题下一题 0.64难度单项选择更新时间:2014-05-30 05:45:50

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