Don’t get off the bus it has stoppedA. untilB. ifC. becauseD. though

问题补充：

Don’t get off the bus it has stopped．

A. until

B. if

C. because

D. though

答案：

(答案→)A. until

B. if

C. because

D. though

解析：句意：一直到公共汽车停了才能下车。not…until…直到……才……。故选A