问题描述: I learned a lot by ____(do)things.I can take care of myself now. 1个回答 分类:英语 2014-11-17 问题解答: 我来补答 doing介词后面加动名词百度教育团队【海纳百川团】为您解答请点击“选为满意答案”按钮, 展开全文阅读