摘要： As , they were waiting for us at the airport. A. plan B. planning C. being planned D. planned
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As ________ , they were waiting for us at the airport.
A. plan B. planning C. being planned D. planned
查看习题详情和答案>>As ________ , they were waiting for us at the airport.
A. plan B. planning C. being planned D. planned
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