- It's 9 o'clock. I'm afraid I have to leave, I'll be late for the plane. - Have a nice trip. A. or B. so C. and D. but 查看更多

 

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— It's 9 o'clock. I'm afraid I have to leave, ______ I'll be late for the plane. 
— Have a nice trip.
[     ]

A. or
B. so
C. and
D. but

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