31. I am not good at maths, but English
改进: I am good not at mathematics but at English/ My strength is not
mathematics but English.

32. Who is the proper person to make up his minds about children's
leisure time?
改进: Who is the proper person to plan children's leisure time?

33.It is children who clear about their interests.
改进: It is children who are clear about their own interests.

34. I agree the latter idea.
改进: I agree with the latter idea.

35. Many people dissatisfy with the status quo.
改进: Many people are dissatisfied with the status quo.

36. So I feel breathe more comfortably now.
改进: So I feel more comfortable now when I breathe.

37. People should learn knowledge no matter how old they are.
改进：People should learn no matter how old they are/ People are never
too old to learn.

38. No one knows all the things.
改进: No one knows everything.

39. I want to live in a quiet place to admire peaceful life.
改进: I want to live in a quiet place to enjoy peaceful life.

40. Each form of having friends has its advantages
改进: Each way of choosing friends has its advantages.

41. I was admitted to a key university for which few dared to sign up.
改进: I was admitted to a key university to which few dared to apply

42. Luckily, he recognized an American professor.
改进: Luckily, he knew an American professor.

43. They will learn the bad habits.
改进: They will develop bad habits.

44. In this continued process, people make progress.
改进: In this cycle, people make progress.

45. Lastly, higher education is equal to higher salary.
改进: Lastly, higher education means higher salary.