问题
选择题
Someone called me up in the middle of the night, but he hung up ______ I could answer the phone.
A．if
B．since
C．until
D．before
答案
答案：D
此题考查介词,根据语境可知选择D表示在我接通电话之前.
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Someone called me up in the middle of the night, but he hung up ______ I could answer the phone.
A．if
B．since
C．until
D．before
答案：D
此题考查介词,根据语境可知选择D表示在我接通电话之前.