whose box is it?复数形式

whose box is it?复数形式 whose coat is it?改为复数形式, What is this? It is a box.复数形式 It is a red pencil box.变成复数形式. it is a box.(改为复数形式）帮忙啊! Whose is this handbag?复数形式是什么 Whose book is that?改为复数形式 This is a box.改为复数形式 改为复数；WHOSE BOOK IS IT box 的复数形式 box的复数形式 box复数形式 Whose tape is this?（改为复数形式） Who is she?She's my teacher What's that?It's a renily--box改为复数形式 This book is in that box.（改为复数形式） __what is it _IT is a box改为复数句 It is a large box.(改为复数句） 改成复数形式．1．Is that a bus?2.What's thia?It's a box.3.Where is the pen?It's in the desk.