that is his pencil改为复数句

that is his pencil改为复数句 Is that her pencil?改为复数句 that is a pencil.改为复数句 Is that Kate's pencil?(改为复数句) that is his brother 改为复数句 This is my pencil.（改为复数句） It's his backpack.（改为复数句） IS this his book?改为复数句 This is my pencil.改为同义句 this is his pencil case 复数句 我英语卷子 That is my pencil 改为复数句 This is her brother改为复数句 Is th this is a pencil改为复数句 Is that his pencil?No,it isn't.改为复数形式 This is his pencil.(改为否定句)