8. She was so angry after reading the letter that she t_________ it up angrily.

7. On a sale, you can get many things by b_____________ with the sellers.

6. There is no bus left at such a late time, as a c_______________, we had to walk home.

5. He was a___________ of stealing the car.

4. His new car has become the e__________ of the others.

3. Nobody is perfect. Everyone has his or her w_____________.

2. His suggestion sounds r_____________. You’d better take it into consideration.

1. His father is a m_____________, who is experienced in doing business with foreigners.

10. The real ______________(功能) will only be known once we discover new ways of thinking about the technology.

Unit 19 　Book 　2　

9.　　　　　 Now that we are developing new technology at such a high pace, the true _____________(挑战) is to find new ways of using it.