It's a desk.改为否定句,一般疑问句,并做肯定,否定回答

It's a desk.改为否定句,一般疑问句,并做肯定,否定回答 This is (a birthday card).对打括号的部分提问That's a pencil case.改为一般疑问句It's her desk.改为否定句 It's a computer改为一般疑问句,并作否定回答还有，把It’s an eraser.改为否定句 It's a kite.改为否定句 It's time for bed.改为否定句、一般疑问句 This is a teacher's desk(改为一般疑问句,并作否定回答.）求教 It's my birthday today改为一般疑问句.肯定回答.否定回答.否定句 It's a good idea.(改为否定句) It’s a computer room.改为否定句 It’s a ruler.（改为否定句）. It ’ s a computer room.改为否定句 改为否定句;She think it's a great trip. It's my pencil case 改为否定句This is her ruler 改为一般疑问句 I think it's very difficult.改为否定句 I can speak English 改为一般疑问句 It's a new school bag否定句,一般疑问句 It‘s on the desk.怎样改为一般疑问句? there is a desk in the room ｛改为否定句｝ There is a book on the desk.(改为否定句)