作业帮Helen can't find her backpack.改成同义句改成：Helen doesn't know____her backpack_______.
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/08 14:53:36
Helen can't find her backpack.改成同义句改成：Helen doesn't know____her backpack_______.
Helen can't find her backpack.改成同义句
改成：
Helen doesn't know____her backpack_______.
Helen can't find her backpack.改成同义句改成：Helen doesn't know____her backpack_______.
Helen doesn't know if her backpack is lost.
Helen doesn't know where her backpack is.
where...is