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 insgroupsto avoid unnecessary lost. 　　改进: Children should be taught discipline insgroupsto avoid unnecessary loss. 　　50. I felt alone. 　　改进: I felt lonely