问题补充:
--- Will Helen come to my party tonight?
--- I am not sure. She go to the cinema with her father.
A. shall
B. can
C. must
D. may
答案:
A. shall
B. can
C. must
(答案→)D. may
解析:情态动词辨析。A会;B可能;C一定,必须;D也许。根据I am not sure说明她非常不确定,D的语气比B还要弱。所以D正确。句意:—Helen会来参加我今晚的聚会吗?—我不确定。也许她会陪她爸爸看电影。