Is this your brother?(做否定回答)

Is this your brother?(做否定回答) Is that your brother?做否定回答 Is this your friend?做否定回答 is the boy your brother做否定回答 Is this boy your brother?(做肯定回答) Is Tim your brother?（作否定回答 Is Guo Peng your brother?否定回答? Is this your brother?(做否定回答) 到底是用he isn't 来回答 还是it isn't回答啊、 Is this your son?如何做否定回答? is this your new shirt 做否定回答 Is this your pen?（做否定回答） Is this boy your brother作回答