4.Now we are doing our best to 　　　　　　　　(保护)and rebuild the old city walls .

3.When you look up a word in a 　　　　　　(词典), pay attention to the first letter of the word .

2.The plants in the forests help to make the air 　　　　　　　　(新鲜) and clean .

1.We 　　　　　　　　(分享) the world with plants and animals .

10. People have hobbies because hobbies can bring them happiness ,　　　　　　　 　(友谊) and knowledge .

第十二组

9.I used to 　　　　　　(听)to rock music ,but now I collect paintings and telephone cards .

8.Soccer is one of the 　　　　　　　　　(最)popular sports in the world today .

7.I’m a doctor . It is my 　　　　　　　　　　(责任)to save the patients.

6.We should eat more furit and vegetables but　　　　　　　　 　(更少) meat .

5.Germs can get into the human body and 　　　　　　　　　(引起)diseases .