作业帮They are running in the playground改为过去式
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/06 03:50:43
They are running in the playground改为过去式
They are running in the playground改为过去式
They are running in the playground改为过去式
They were running in the playground.
they were running in the playground
They were running in the playground.
一般过去式