问题描述: It's about 20 minutes _____ (on bike\by bike\take a bike) 1个回答 分类:英语 2014-12-12 问题解答: 我来补答 应该是by bike 用骑车的方式大约要20分钟 .on bike 是在车上.take a bike 指骑车这个动作. 展开全文阅读