my backpack is behind the chair同义句

my backpack is behind the chair同义句 My backpank is behind the chair.（改为同义句）The backpack __ __ __ My backpack is behind the chair.改为同义句.The backpack___ ___ __ Lucy's backpack is behind the chair.（改为同义句） my backpark is behind the chair同义句 My backpack is behind the chair.对behind the chair提问 My backpack is under the chair.的同义句是什么?_____ _____ a backpac 把单词连成句 chair,on,my,is,backpack,the lucy's backpak is behind the chair同义句 My backpack is (on the chair.) This is my backpack改为同义句 My backpack’s behind the chair （提问）— — backpack?（前面两个横线是要填的两