摘要： I'm sorry to have kept you .
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I’m sorry to have kept you ______ for almost two hours.
[ ]
A. wait
B. to wait
C. waiting
D. waited
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B. to wait
C. waiting
D. waited
— I'm sorry to have kept you _____.
— It doesn't matter. I've just come.
— It doesn't matter. I've just come.
[ ]
A. wait
B. waited
C. waiting
D. to wait
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B. waited
C. waiting
D. to wait