Question

Please don’t stand up in class _____ you ______.

A. until ; are told to   B. when ; are told   C. after ; were told   D. before ; were told to

 

Answer 1

【答案】

A

【解析】

试题分析：句意：在课堂上请到允许你时再站立。Not···until直到……才，是一固定句型；主句使用一般现在时，故时间从句也用一般现在时。Tell sb to do sth告诉某人做某事，改为被动语态后不可丢掉不懂事标记to。所以选A。

考点：考查连词及被动语态。