you _____pay for the book if you _____itA don't need to ;needn't _英语解答

you _____pay for the book if you _____it
A don't need to ;needn't B don't need ;don't need C needn't ;needn't D needn't ;don't need

人气：430 ℃　时间：2020-06-26 20:45:34

解答

D
如果你不需要这本书,你没必须付钱
前一个是没必要,用needn't
后一个是不需要,所以用don't need