20. --- Look, Tom has fallen asleep on the sofa.

　 --- No, he _____. Don’t you see his feet tapping the floor?

　 A. hasn’t slept　　　　 B. didn’t sleep　

C. isn’t sleeping　　　 D. wasn’t sleeping

19. After staying in hospital for long, the patient was advised to go to the seaside to ______ his health.

　A. take up　 B. carry up　 C. pick up　 D. make up

18. --- Could you give us some advice about a good restaurant?

　 --- ____ That’s my favorite place.

　A. No problem.　　 B. Why not go to White Rose?

　C. Sorry, I can’t.　　 D. Don’t trouble yourself so much.

17. The explorers felt rather _____ when they found their camp completely ____ in the fierce storm when they went out.

　 A, disappointing; destroyed　 B. disappointed; destroying

C. disappointed; destroyed　　 D. disappointing;　 destroying