This book is new.That book is new,too.=___this book ___ that are new.=This book and that book _ _ _.

问题描述:

This book is new.That book is new,too.=___this book ___ that are new.=This book and that book _ _ _.

=Both , and ……和……都……
=are both new
根据句意:这本书是新的,那本书也是新的。意思是这本书和那本收都是新的。

Both and
are both new .

Both,and
are both new

both and
are both new