16.21.What time is it when Sam's mother asks him to get up? A8:20. B.8:00. C.8:30. 22.Why would Sam go to Tom's home? A.To help him with math. B.To help him with physics. C.To play computer games. 23.How long will Sam stay at Tom's home? A.Half an hour. B.One hour. C.Two hours. 24.What's Sam's favorite food? A.Chicken. B.Vegetable sandwiches. C.Chicken sandwiches. 25.Why did Sam's dad sleep late last night? A.He ost his way in the station. B.He helped to look for a lost girl in the station. C.He helped a girl to get together with her mother.