题目内容
The ambulance was just arriving, for a worker, who ______ the window on the second floor, fell off the window.
A. had been repairing B. was repairing
C. has been repairing D. would be repairing
A
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题目内容
The ambulance was just arriving, for a worker, who ______ the window on the second floor, fell off the window.
A. had been repairing B. was repairing
C. has been repairing D. would be repairing
A