Miss Li often tells her students not to get off the bus until it________A.has stoppedB.stoppedC.will stopD.shall stop为什么不能选B呢?

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MissLioftentellsherstudentsnottogetoffthebusuntilit________A.hasstoppedB.stoppedC.willstopD.shallsto

Miss Li often tells her students not to get off the bus until it________A.has stoppedB.stoppedC.will stopD.shall stop为什么不能选B呢?
Miss Li often tells her students not to get off the bus until it________
A.has stopped
B.stopped
C.will stop
D.shall stop
为什么不能选B呢?

Miss Li often tells her students not to get off the bus until it________A.has stoppedB.stoppedC.will stopD.shall stop为什么不能选B呢?
前后时态要一致,前面为tells,一般现在时,后面也要现在时,所以只能选A

额,不插一脚了,不过那位说的是对的,要注意时态哦