(·福建)The girl had hardly rung the bell the door was opened suddenly and her friend ru

问题补充：

(·福建)The girl had hardly rung the bell the door was opened suddenly，and her friend rushed out to greet her.

A. before

B. until

C. as

D. since

答案：

(答案→)A. before

B. until

C. as

D. since

解析：这个女孩刚一(几乎还没有)按门铃，门突然就被打开了，她的朋友冲出来迎接她。hardly...before“几乎还没有……就……”，“刚一……就……”，暗含“快”的意思。