The teacher told us to remain silent unless _______.A．to be askedB．askedC．being_刷题宝

题干

The teacher told us to remain silent unless _______.

A．to be asked	B．asked
C．being asked	D．you asked

上一题下一题 0.64难度单项选择更新时间:2016-05-19 03:32:58

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