Is this her key?怎么改为复数形式?

Is this her key?怎么改为复数形式? this is her key ring改为否定句 That is her key 改为同义句怎么改啊 This is a key改为一般疑问句? this is his key 改为一般疑问句 This is my key.改为一般疑问句! This is her book怎么改为否定句 that is her key.that key＿＿ ＿＿.(改为同义句) This is photo of her family改为同义句 This isThis is photo of her family改为同义句This is 怎么改? This is her brother.改为复数句子 Is this her ruler?改为同义句. This is her baby.改为复数形式 is this her pencil box?改为陈述句 Is this her map?(改为同义句) this is her coat 改为一般疑问句 This is my pencil case.改为一般疑问句Is that her book?做肯定回答That is her jacket.改为否定句Is it her key?改为肯定句This is a pencil in English.对划线句子提问 划线地方是a pencil Hey,please look at this picture.this is an English teacher.Her name is Alice.this is her ( ).Her ( ) is blue.And her key is white.If you like this girl,Please call her.Her telephone number is 161-7898. Whose is the key?改为同义句 ()()the key ()()?怎么改?