题目内容：

They go to work on their bike同义句急~

优质解答

They go to work by bike.
They ride their bike to work.

追问：

为什么用They bike 没加s

追答：

第二个应该加s，手误，不好意思 第一个不加， ~~~~~~~~~~～～~~~~祝你进步，如对你有帮助，请及时采纳~~~~~~~~~~~~~~~~