问题
选择题
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
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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：A