Is this my room?Not,your room is Number 12改病句

What is your room number 怎么回答 your room number is----- A.402 room B.room 402 C.402 Room D. This is your room.That is my room名词性物主代词 this is my room thanks to your letter改错 this is Andy'room.it is not this is robot room.修改病句 this is my room ,that is the ___(twin) room This is my pencil ,and that is your.改病句 前面还有五个空!Come in.jack.This is my room .Your room This is your room.变为一般疑问句 my room is very not tidy. This is my room同义句是?