1. 用方框内短语的适当形式填空。

sense of touch   prevent … from…  be divided into  electric shock  act as if necessary  sleep in  out of shape  a variety of  apply… to …

1. （1） It is said that our can help us develop stronger social relationships with each other.
3. （2） On weekends many young people like to .
5. （3） After the accident, the wheel of the car had been twisted .
7. （4） It was not until the beginning of the 20^th century that people learned how to the disease spreading.
9. （5） Students must be encouraged to what they have learned in class practice.
11. （6） A trained dog can a guide to a blind person.
13. （7） England can two major regions, the highland zone and the lowland zone.
15. （8） I brought my finger close to the key, and I felt a light but very clear
17. （9） Schools in our city provide optional classes to cater for students of different levels.
19. （10） We will use air power to protect UN peacekeepers .