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

---______. He's very good at this sort of thing.

A. Don't worry　 　　　　　　　　　B. I couldn't agree more

C. Of course　 　　　　　　　　　　　D. A piece of cake

14. You can't imagine what difficulty we had ______ home in the snowstorm.

A. walked　 　　　　B. walk　 　　　　C. to walk　 　　D. walking

13. ---Has your father returned from Africa yet?

---Yes, but he _____ here for only three days before his company sent him to Australia.

A. was　 　　　　　B. has been　 　　C. will be　 　　　D. would be

12. We had to wait half an hour _____ we had already booked a table.

A. since　 　　　　　B. although 　　C. until 　　　　　　　D. before

11. Don't be _____ by products promising to make you lose weight quickly.

A. taken off　 　　　B. taken out　 C. taken away 　　　　D. taken in

10. ---Turn off the TV, Jack. ____ your homework now?

---Mum, just ten more minutes, please.

A.Should you be doing　 　　　　　　　B. Shouldn't you be doing

C. Couldn't you be doing　　　　　　　 D. Will you be doing

9. The crowd cheered wildly at the sight of Liu Xiang, who was reported ______ the world record in the 110-meter hurdle race.

A. breaking　 　　　B. having broken 　C. to have broken　 　D. break

8.Help others whenever you can ______ you will make the world a nicer place to live in.

A．and　　　　　 B．or　　　　　　 C．unless　 　　　D．but