1. - Could I borrow your bike for a few days?

　 - ______, but you must return it next week.

　A. I’m sorry　　 B. I’m not sure　　 C. No problem　　 D. I hope so

7.It is very important to learn a foreign language.

6.It is often difficult to pronounce a long word.

5.It is pleasant to walk in the garden.

4.It is a pity that you couldn't find a less expensive hotel.

3.It is lucky that you found your wallet.

2.It was kind of her brother to invite her to stay.

1.It was generous of them (her sisters) to offer to pay her fare.

11.A 12.C 13.C 14.B 15.C 16.A 17.C 18.B 19.C 20.A

1.B 2.D 3.B 4.D 5.B 6.C 7.A 8.D 9.C 10.C