Someone called me up in the middle of the night, but he hung up I could answer the phone.

发布时间：2020-08-17 02:43:48

Someone called me up in the middle of the night, but he hung up      I could answer the phone.
A. as
B. since　　
C. until　　
D. before

网友回答

A. as
B. since　　
C. until　　
(答案→)D. before
解析：句意：有人在半夜给我打电话，但是在我接之前他就挂断了。as因为；since既然； until到……为止； before在……之前。根据句意故选D。
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