题目内容
John waited at the bus stop for nearly an hour ________ the bus finally arrived．
[ ]
A．
when
B．
as
C．
before
D．
while
答案：C
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John waited until he got back his breath and could speak .
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John waited until he got back his breath and could speak .
|
A．normally |
B．commonly |
C．regularly |
D．formally |