this book 复数
Is this your book ? 变为复数句
Is this a book?的复数句
this is a book改为复数形式
Is this your book?单复数句互变
lt this a book 改成复数句
This is a book(改复数) _______ _______ book
How much is this English book?(改为复数形式)
This book is in that box.(改为复数形式)
This is an English book(改为复数句)
Is this a book?的复数形式是什么?3Q
Is this an English book?改为复数句