单项选择题
-Medam,do all the buses go downtown? -（）
A.Wow，you got the idea B.No，never mind C.pretty well，I guess D.Sorry，I’m new here
A.Yes，please B.No，go ahead C.Sure，please D.I don’t like it
A.Hold on.I’ll get her. B.No，she isn’t here. C.Yes，she lives here. D.Yes，what do you want？