问题描述: I can swim now but couldn't swim when l ___ ten years old. 1个回答 分类:英语 2014-11-10 问题解答: 我来补答 was .我现在会游泳,可十岁的时候可不会.十岁的时候是过去,所以用am的过去式was 展开全文阅读