10. There will be more tall b_______ (楼房)in our cities .

9. I think we should have _______(污染) and keep the air clean .

8． You can _______(想象) how strange it was .

7． What do you often do when you are ________ (独自) at home ?

6. _____________(信封) are used for sending letters.

5.　　　 All of us felt ____________(紧张) during the horrific moive.

4.　　　 That piece of news was really ___________________(失望的).

3.　　　 The bad earthquake ______________(毁坏) all the houses of two provinces

2.　　　 A fourteen-year-old boy ___________(谋杀) his mother in yesterday’s newspaper.

1.　　　 I was ______________(惊讶) at what you said.