---Could I have a window seat ?
---All right. Your flight boarding at Gate 18 at 2:15.
A. have begun
B. began
Cis to begin
D. begins
网友回答
A. have begun
B. began
C. is to begin
(答案→)D. begins
解析：考查时态。“我能坐在靠窗户的位子吗？”“好的。你的航班2:15在18号舱门登机。”按照时间表安排好的事情，用一般现在时。主语是单数。故选D。