题目内容
【题目】Please don't stand up in class until you .
A.were told toB.are told toC.were toldD.are told
【答案】B
【解析】

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题目内容
【题目】Please don't stand up in class until you .
A.were told toB.are told toC.were toldD.are told
【答案】B
【解析】