Is that his grangfarther?否定回答怎么说

Is that his father?回答 Is that his 还是Is that he?一定要正确! that is his brother 改为复数句 英语 一般陈述句Is that his notebook? That is his brother的复数形式 Is that his sister?变为复数句 is that his key (改为复数形式) Is that his uncle的复数形式 that is his pencil改为复数句 that is his sister改为复数形式 That is his eraser改为一般疑问句 that is his pen变复数句 That box is his复数句式 That is his friend.改为复数句 that football is his改为一般疑问句 that is his jacket 改为否定句 is that his eraser咋回答 Is that his ruler(作肯定回答)