摘要： The earthquake when I some cleaning. A. starts, was doing B. started, was doing C.was starting, was doing D.starts, were doing
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The earthquake _____ when I _____ some cleaning.
[ ]
A. starts, was doing
B. started, was doing
C. was starting, was doing
D. starts, were doing
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B. started, was doing
C. was starting, was doing
D. starts, were doing
The earthquake ____ when I ____ some cleaning.
[ ]
A. starts, was doing
B. started, was doing
C. was starting, was doing
D. was starting, did
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B. started, was doing
C. was starting, was doing
D. was starting, did
The earthquake ____ when I ____ some cleaning.
A. starts, was doing B. started, was doing
C. was starting, was doing D. starts, were doing
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