—Are you coming to the English evening?—I’m not sure. I go to the concert instead.A. must

问题补充：

—Are you coming to the English evening?

—I’m not sure. I go to the concert instead.

A. must

B. would

C. should

D. might

答案：

A. must

B. would

C. should

(答案→)D. might

解析：考查情景交际。根据“I’m not sure.”可知，“我”不确定，故用might“可能”。故选D。