21. Living in the city has many a                 such as good schools, big shopping centers and so on.

22. They killed many sharks last year. How c                 they are!

23. It was her dream to enter the film i                 when Gong Li was very young.

24. So far, no s                 studies have shown that sharks fins are good for health.

25. I saw the White House where the P                 of the USA lives.

26. I don't like lions because they're u                .

27. People throw l                 into the river and make it really dirty.

28. Do you know how to r                 the waste paper or bottles?

29. Her teaching experience gave her a big a                 over the other applicants for the job.

30. The landlord is so c                 that almost everybody hates him.

31. With the development of                 (工业). Our country is becoming more and more beautiful.

32. What do you think of the                 (交通) in your town?

33.                 (科学的) farming is very popular with farmers.

34. There is some information about the people who are                 (残酷) to animals.

35. Her mother couldn't                 (负担得起) to pay for her child's education.

36. When it comes to climate, warm conditions and a normal amount of rainfall are                 (有利条件) that attract people.

37. Don't use                 (塑料的) bags.

38. Paper can be                 (再利用). It saves us a lot of wood.

39. She was a famous model before she entered the film                 (产业).

40. I suggest you use the public                 (运输工具) as much as you can.

41. 砍倒树木对人类和动植物有害。（词数不限）