Boss,must I finish typing this letter today?No,you__.You may finish it tomorrow.
问题描述：
Boss,must I finish typing this letter today?No,you__.You may finish it tomorrow.
A.needn't B.mustn't C.don't D.won't
答
needn't
用must来提问,如：Boss,must I finish typing this letter today?
肯定回答：Yes, you must.
否定回答：No,you need't. 或： No, you don't have to.