---Are you ing to Betty’s wedding?
---I’m not sure. I go to Beijing on business that day.
A. must
B. would
C. should
D. might
网友回答
A. must
B. would
C. should
(答案→)D. might
解析：句意：你打算参加Betty的婚礼吗?我不确定。那天我有可能去北京出差。A. must必须；B would将会；C. should应该；D. might有可能。故选D。
考点: 考查情态动词的用法。