作业帮put some stones at the bottom of the tank改为否定put some stones at the bottom of the tank改为否定句
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/16 16:51:53
put some stones at the bottom of the tank改为否定
put some stones at the bottom of the tank改为否定句
否定句：
Don't put any stones at the bottom of the tank.