that is his sister改为复数形式

that is his sister改为复数形式 This is his sister and that is his son.怎么改为复数形式 This is his sister and that,s his son.怎么改为复数形式 This is his sister改为复数句 Is that his sister?变为复数句 That is my sister改为复数形式 that is my sister改为一般疑问句 That is my sister改为复数形式 This is his cousin改为复数形式 I'm Mike Smith改为一般疑问句 She is my friend（改为一般疑问句）That is his sister（改为复数句）These are her pencils(改为单数句） His sister is name is Lucy改为一般疑问句 is tim her friend?做否定回答 that is his family photo 改为同义句 this is my sister 改为一般疑问句 ①This is my sister.(改为一般疑问句并作肯定回答) ②That's my bro①This is my sister.(改为一般疑问句并作肯定回答)②That's my brother.(改为否定句)③That is my sister.(改为复数形式)④This is his cousin.(改为 His sister studies very hard.(改为同义句） His sister is ___ ___ ___ his sister studies very hard 改为同意句his sister is 什么/ the girl in yellow is his sister改为一般疑问句 His sister is tall .(short)(改为选择问句） HIS sister is a little bit unhealthy改为同义句 This my sister.改为一般疑问句并作肯定回答 That'sThis my sister.改为一般疑问句并作肯定回答That's my brother.改为否定句That is my sister改为复数形式This is his cousin.改为复数形式I'm Mike Smith.改为一般疑