It wasn’t long the rain stopped and the moon came out again.A. whenB. untilC. beforeD. si

问题补充：

It wasn’t long the rain stopped and the moon came out again.

A. when

B. until

C. before

D. since

答案：

A. when

B. until

(答案→)C. before

D. since

解析：long before 意为: “好久以前, 在…以前很久”