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题目内容
（国家开放大学英语语法）
Hardly ______ when the bus suddenly pulled away.
A. they had got to the bus stop
B. they got to the bus stop
C. did they get to the bus stop
D. had they got to the bus stop
A. they had got to the bus stop
B. they got to the bus stop
C. did they get to the bus stop
D. had they got to the bus stop
参考答案