57.要是我们接受了他的建议，我们本可以避免犯这样的错误的。

28. While cleaning the snow on the road, _____.

34. —Tom, let’s hang out after school.  —Sorry. I have _____ Frank to work on the biology report with him. 

45. What is the passage mainly about?

63.大家在生活中都能交到朋友，只是有人没有交到知心朋友。

（ ）15. Reading is the main factor accounting for the eyes diseases.

31. Can you get the work _____ on time?

20. The new highway is almost _____ than the old one. 

33. I have done much of the work. Could you please finish _____ in two days? 

41. What shop did the author’s father own?

12.根据原文"People who are nearsighted can only see things that are very close to their eyes."可知近视眼只能看清近处的事物，与题干不符。故错误。

64.我们已研制出了能大规模提高生产的方法。