问题补充:
Don leave for there until to do so.
A. youll be told
B. told
C. telling
D. you are told
答案:
A. youll be told
B. told
C. telling
D. you are told
解析:首先,该句考察的是状语从句的时态问题,我们常讲“主将从现”,故从句应用一般现在时或现在完成时,另意为:不要去那除非有人叫你去,故选 D ,另外when, while, if, as if, although / though, as, until, once, whether, unless, where等引导的从句中,如果其谓语为be,而主语与主句的主语相同时,则从句的主语和be可省略。主句为祈使句,主语为you,而从句主语为you,谓语动词为be,故而选B。