33. Better take a hat with you ______ you get sun burnt because of the strong sunlight.

47.You can get the bacteria under control by bathing with your soaps ______ for two weeks.

34. Most people work because it’s unavoidable. ______, there are some people who actually enjoy work. 

（ ）12. The company was set up 15 years ago.

46.The ______ of bacteria causes body odor.

25. I keep the picture where I can see it every day, _____ reminds me of the days in my hometown.

（ ）53.Dan is interested in taking wildlife photographs and enjoys the kind of programme which gives him a chance to see a professional photographer at work.

44. What can we learn from the passage?

42. It’s implied in the passage that the author may be _____. 

31. Many businesses started up by college students have ______ thanks to the comfortable climate for business creation.

3.

49. ______ absorb smelly sweat easily and therefore are better at hiding body odor.