someone is standing behind the door 化为 "negative statements"
-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.
I shall go to school next Saturday 化为 "negative statements"
the boy is standing behindthe door
the trash bin is behind the door.
The football is behind the door.behind the
the lady who is standing behind the counter
The lady who is standing behind the counter.
The boy is standing behind the girl改为同义句