must i renew the book now no,you_.you__that before the deadline

A。mustn't ;should do          B .needn't;should have done      

 

C .may not ;should do                  D can' t   ;should have done  

 

 

 

答案是D啊为什么

 

 

求解释

楼主您好！
答案选择B
理由：must的否定式为needn't，第二空解释为本应该不做某事而实际上做了，含有责备的意思，由语境综合选B.
祝愉快！