6.16.A.Seven B.Ten. C.Seventeen. 17.A.The book store. B.The cinema. C.The supermarket. 18.A.One ticket. B.Four tickets. C.Three tickets. 19.A.The woman who checks the tickets. B.The woman who sells the tickets. C.Tom's mother's friend. 20.A.Because the big woman is a bad person. B.Because it's his first time to see a movie. C.Because he wants to meet a lot of friends.