Lucy was one of my best friend at high school. At that time, we often spend time together. Thank to her help, I made great progresses in my study. Last year, she decided to study abroad. In other words, we would be separated for long time. Before she was left, I prepared a gift to show my best wishes to him. She said it was a best gift she has ever had. From then on, we’ve kept in touch with each other through e-mail. I look forward to see her again in the near future.friend----friends
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(答案→)friend----friends
解析：
【小题1】one of 后面接名词复数：friend----friends
【小题2】时间是At that time spend-所以用过去时spent
【小题3】考查词组：thanks to多亏了
【小题4】progress是不可数名词，不能用复数
【小题5】for a long time一段很长时间
【小题6】leave做“离开”讲是不及物动词，不能用被动，删去was
【小题7】用her代替Lucy
【小题8】修饰最高级用 the
【小题9】主句是She said从句用过去完成时had done
【小题10】look forward to doing渴望做…., seeing