— It’s one o’clock now. I must go. — It’s raining outside. Don’t leave it stops.A. whenB.

问题补充：

— It’s one o’clock now. I must go.

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

A. when

B. since

C. while

D. until

答案：

A. when

B. since

C. while

(答案→)D. until

解析：考察关系词用法。四个选项分别表示当……时候、子……以后、当……时候和直到，根据题意，现在一点钟了。我必须得走了。——外面正在下雨。直到雨停不要离开。选D