注意：此页面搜索的是所有试题
题目内容
（华东交通大学大学英语1）
Someone called me up in the middle of the night, but they hung up _____ I could answer the phone.
A、
as
B、
since
C、
until
D、
before
A、
as
B、
since
C、
until
D、
before
参考答案