This book is heavy ,but that piece is l()

This book is heavy ,but that piece is l() 5.This desk is heavy. That book is . A. heavy B. light C. early D. late This one is heavy.翻译 Whose book is this? This is a book whose is this book? This book is yours Lily,is this book()? this is ( ) book. This is a heavy traffic a_______ Is this box heavy or light? IS ELEPHANT HEAVY THIS .(排排队) Is this a book? Yes,this is. This is s book.(a book提问) This is my book.This book is mine造句 this is my book. this book is mine 区别是什么? This book is ()(real) interesting 改错：is this book your?