—It's9o'clock.I'mafraidIhavetoleave,

问题详情：

— 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

【回答】

A

知识点：连词

题型：选择题