单项选择：Lisa （） to bed util her mother came back last night.①went②is going③didn‘t go④goes

单项选择：Lisa （） to bed util her mother came back last night.①went②is going③didn‘t go④goes
单项选择：Lisa （） to bed util her mother came back last night.
①went
②is going
③didn‘t go
④goes

单项选择：Lisa （） to bed util her mother came back last night.①went②is going③didn‘t go④goes
答案是C,根据not.until.知道.才

选3
本句用的not until 句型，直到.....才..... 时间状语是昨晚，故用一般过去时。