That is a box 改为复数句子

That is a box 改为复数句子 That is a box 改为单数或则复数 This is a box.改为复数形式 this is a box改为复数 This is a box and that is a knife （改为复数句） 将下列句子改为复数句1this is hs sister 2.that is my brother 3it is a box is that a box改成复数 将下列句子改为单数或复数形式1.This is a T-shirt in the box.[改为复数]2.These are knives.[改为单数]3.It is an apple.[改为复数]4.They are students in the school.[改为单数]5.That is a welf.[改为复数]6.Is there a book in This book is in that box.（改为复数形式） Is that a watch 怎么改为复数句子? That is a good picture (改为复数句子) 把is that a woman teacher?改为复数句子 This is his pencil-box.改为复数句子怎么改? 改为负数句子.1.That isn't my picture.2.What's this in English.3.She is a doctor.4.Is he your friend?5.It is his box.6.Is thatyour book?改为复数句子 __what is it _IT is a box改为复数句 This is a box and that is a knife.改为复数形式〔怎么变的〕 That is you dictionary改为复数句子 Is's a pencil-box.改为复数句