单项选择题
A.No, I'm not B.Yes, I'm not C.No, I am D.Yes, I am
A.Customer and shop assistant. B.Customer and ticket-seller. C.Boss and secretary. D.Customer and airplane clerk.
A.Meet her Mum at the airport. B.Say good-bye to her Mum at the airport. C.Fly to another city together with her Mum. D.Go to the cinem