I must be off at once. I’m late.You to the school because today is Sunday..A. nee

问题补充：

--- I must be off at once. I’m late.

--- You to the school because today is Sunday..

A. needn’t to go

B. don’t need go

C. don’t need going

D. needn’t go

答案：

A. needn’t to go

B. don’t need go

C. don’t need going

(答案→)D. needn’t go

解析：must的含义是必须一定，其否定形式mustn’t表示禁止的含义。故must的否定回答一般借助于needn’和don’t have to来构成，句意:我必须立即动身了。我晚了。——你不必去学校，因为今天死星期日。结合语境可知选D。