— Must I come back in a week?— Oh,no,you ____.A.don't B.mustn't C.don't have to D.can't

问题描述:

— Must I come back in a week?— Oh,no,you ____.A.don't B.mustn't C.don't have to D.can't

选C,must应该用needn't或者don't have to来否定