20．-Tony said he could fix my bicycle, but I really doubt it.

-_　　 __. He's good at that sort of thing.

　　　 A．Don't worry　　　 　　　　　　　　　　　　 B．Of course

　　　 C．A piece of cake　　　　　 　　　　　　　　　 D．I couldn't agree more

19．-Ring me at six tomorrow morning, will you?

-Why that early? I ____then.

　　　 A．have slept　　　　　　　 　　　　　　　　　 B．have been sleeping

　　　 C．will sleep　　　　　　　　 　　　　　　　　 D．will be sleeping

18．Van Gogh succeeded in selling only one painting in his lifetime, and ____ was sold to his brother.

　　　 A．another　　 　　　 B．that　　　　 　　　 C．one　　　 　　　　 D．which

17．A woman was dug out ____ after being buried deep in the ruins for more than 200 hours.

　　　 A．living　　　　 　 B．lively　　　 　　　 C．alive　　　 　　　 D．live