His 【b填空】 is behind the door

-What is behind the door? Is it behind the door? Mile is behind the door对behind the door提问 It is behind the door.对behind the door提问 She is behind the door.（对behind the door提问. the trash bin is behind the door. The football is behind the door.behind the —Where is my hat?—Is ( ) one behind the door yours?A.a B.the the bloom is( )the back door.A.behind B.near C.over 应该填什么 The cat is behind the door behind the door.就划线部分提问 The umbrella behind the door is kitty's(划线的是behind the door) his friend ()(躲)himself behind the door just now.