You’d better your flight reservation at the latest 3 days in advance.
A. confirm
B. convey
C. consider
D. convince
网友回答
(答案→)A. confirm
B. convey
C. consider
D. convince
解析：confirm vt 确定，确认; convey vt 确定，确认；consider vt 考虑；convince vt 说服，使确信。句意为：你最好提前三天确定一下你的航班预定。