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.

　　46. By making friends who are different from ourselves，we can make up for deficiency.

　　改进：By making friends who are different from ourselves，we can make up for our shortcomings.

　　47. A wrong decision will bring even worse fact.

　　改进：A wrong decision will bring even worse result.

　　48. You spend all your life to fulfill your willing.

　　改进：You devote all your life to the fulfillment of your dream.

　　49. Children should be taught disciplines in order to avoid unnecessary lost.

　　改进：Children should be taught discipline in order to avoid unnecessary loss.

　　50. I felt alone.

　　改进：I felt lonely.