改成复数句This is a book.That isn't an egg.Is this a book?Yes,is is.Your picture is very good.

lt this a book 改成复数句 This is a book 改为复数句 Is this a book?的复数句 改成复数形式．4.This is a book. 改成复数句This is a book.That isn't an egg.Is this a book?Yes,is is.Your picture is very good. Give me some glasses,please(改成同义句） This book is tom's(改成同义句）Is your friend a tourist,too(改成复数句） here is the book改成复数句 this is a chinese book改为复数句 This is a sheep怎么改成复数句?急 Is this your book ? 变为复数句 Is this your book 改成同义句 改成复数句.What is it?It's a box.改成单数句.The children are YOUNG Pioneers.改成复数句,并作肯定回答.Is this a red pen?改成复数句,并作否定回答Is that an English book?改为单数句Those are apples改为单数句Those a Is this a book 改成复数形式 Those are chairs 改成单数形式 What are these 改成单数形式 Whose toy is this?改成复数句 This is my dress.改成复数句. this is my desk改成复数句 this is a book改为复数形式 英语复数形式it this a book,it is a pen,there is a book,以上改成复数形式.those are chair,what are these,以上改成单数is,coat,his,where连词成句，pen,book,watch,foot,man,woman,family,boy,child,girl复数形式，用正确形式