They spent 3 hours pianting the trees改为同义句
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/02 15:23:53
They spent 3 hours pianting the trees改为同义句
They spent 3 hours pianting the trees改为同义句
They spent 3 hours pianting the trees改为同义句
It took them 3 hours to paint the trees
They have painted the trees for three hours.