Must 和Can't 的疑问-Must I renew the magazine now?-No,you_______
Must 和Can't 的疑问
-Must I renew the magazine 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
我想问一下为什么答案是D,must的问句不是以needn't回答吗?