---You must do as you are told to.---Oh,I must,______.Amust IB mustn't I C should I D need I

问题描述:

---You must do as you are told to.---Oh,I must,______.Amust IB mustn't I C should I D need I
为什么选A

告诉你做什么,你就必须做什么.
哦,我必须那么做,对不对?
a
否定的话用needn't
希望没记错