4.　　　　 We can’t live without the sun ________ _______ we get heat and light.

3.　　　　 Tomorrow is a particular day ________ _______ his daughter will get married.

2.　　　　 The boy ______ _______ I went to the cinema last weekend is my best friend.

1.　　　　 Are you interested in any of the songs______ ________ you’ve listened?

Now our city is becoming more and more beautiful. But in the past, some people spat everywhere and the streets were rather dirty with a lot of dust. There were few trees along the sides of the streets. The factories used to let out a lot of smoke and waste water which polluted the air and water. But now, everything has changed. No one spit on the ground and the streets are always kept clean. Green trees grow thickly along the streets. All the empty grounds are covered with green grass. The factories are forbidden to let out poisonous smoke or waste water. As a result, the environment has improved greatly.

10. No matter how hard he tried, he would never get to the top of the company.

9. He sent e-mail, hoping to get further information.

8. Every time I pass by the village, I can’t help thinking of the days I spent there.

7. Whenever you come, you are welcome.

6. He talks as if he had done all the work himself, but in fact Tom and Mary did most of it.