作业帮they sang a nice song yesterday改为否定句
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/24 05:28:38
they sang a nice song yesterday改为否定句
they sang a nice song yesterday改为否定句
they sang a nice song yesterday改为否定句
they didn't sing a nice song yesterday.
they did’t sing a nice song yesterday.