问题补充:
John waited at the bus-stop for nearly half an hour the bus finally arrived .
A. when
B. as
C. before
D. while
答案:
A. when
B. as
(答案→)C. before
D. while
解析:before引导时间状语从句,公共汽车来之前,我已等了将近半个小时了。故选C。
时间:2020-10-16 03:45:10
John waited at the bus-stop for nearly half an hour the bus finally arrived .
A. when
B. as
C. before
D. while
A. when
B. as
(答案→)C. before
D. while
解析:before引导时间状语从句,公共汽车来之前,我已等了将近半个小时了。故选C。
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2024-07-09