介绍自己的变化与进步 — 英语选择题
题目
Lily 正在写“成长档案”的自我介绍。下面哪一项最能正确表达她“过去和现在”的变化与进步？A. I couldn't swim two years ago, but now I can swim very well. B. I can swim two years ago, but now I couldn't. C. I am swimming two years ago. D. I couldn't swim now, but I can swim two years ago.