This is my pencil（变为复数句）

This is my pencil（变为复数句） This is my sister(变为复数句) This is my pencil.（改为复数句） It's his backpack.（改为复数句） 1.What's this in English?(变为复数句） 2.This is a pencil case.（同上 英语 句子转换1 This is a watch.改为否定句2 This is my pencil 变为复数句3 It' IS this his book?改为复数句 This is my pencil.改为同义句 This is my good friend 变为复数句 this is a pencil改为复数句 this is his pencil case 复数句 this apple tree is before my house(变为复数句） 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 按要求写句子。1. This is my pencil. (改为复数句)