yes,it is.变复数

Is this your pencil?Yes ,it is.变复数 （单数句子变复数） 1.—Is that your family? —Yes,it is. Yes,it is 的复数形式 Is he a boy Yes,he is.(变复数) Is it your radio?Yes it is 改为复数 Is it your salsd?变复数 Is it your box?变复数形式 What color is it怎样变复数? It is an orange,变复数 It,is,on,the,sofa.变复数 Is it a cat?要求变复数 Yes,I am.{变复数}