7、emorething.Doyouknow…B:I’mnotsure,butyou…A:OK,thanksalot.B:You’rewelcome.Step8Reading1.Readtheconversationin2dandanswerthequestions.2.Role–playtheconversation.3.Explainthelanguagepintsin2d.(1)Couldyouplease...?(2)GoalongMainStreetuntilyoupassCenterStreet.1)until和 t