根据对话内容,填入所缺的句子
A:Hi,Linda.Whatareyoudoingnow?
B:I'mlearningEnglishonTV.
A:Really?_______?
B:Fortwoyears.
A:__________?
B:Notverywell.It'stoodifficult.
A:___________?
B:Iwanttogiveitup,butican't.ithink________
A:Iagreewithyou.LearningEnglishwellisreallyveryhelpful.____________
B:Goodidea.Let'sbegintolearnitnow