—Oh It’s late I must go now.—It’s snowing outside. Don’t leave it stops.A. whenB. afterC

问题补充：

—Oh, It’s late, I must go now.

—It’s snowing outside. Don’t leave it stops.

A. when

B. after

C. while

D. until

答案：

A. when

B. after

C. while

(答案→)D. until

解析：连词辨析。When当……时；after在……之后 ；while然而；until 直到。句意：哦，太晚了，我必须走了。——外面正下雪呢。等雪停了再走吧。固定结构not…until…意思是直到…才…故选D。