分类：教育/科学-外语学习
问题：大学英语2阶段作业6系列问题9需给出详细解释9．I_______ 
9．I________get this done immiately or it will be too late.A. can        B. shall       C. may        D. must
回答：I________get this done immediately or it will be too late.
A. can B. shall C. may D. must 
D
我必须把这仅事情马上做好， 否则就太迟了。
must do必须做某事