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