初二英语有疑问,请高手帮忙!
Mrs.blacksaidtohim,"john,whydoyouneverphoneme?"
johnlaughed."But,Mother,"hesaid,"Youdon'thaveaphone."
"No,"sheanswered,"I____,butyou'vegotone!"
_____应该填什么?
A.don’t
B.haven’t
谢谢了!