学帮网his grandpa has been dead for three years.改为同义句it _____ _____ there years ______his grandpa died
来源：学生作业学帮网 编辑：学帮网 时间：2024/05/31 11:05:15
his grandpa has been dead for three years.改为同义句
it _____ _____ there years ______his grandpa died
has been since
has
been
since