— Have you read this book?    — Yes. But that one is ________ worth reading.

— Have you read this book?

— Yes. But that one is ________ worth reading.

— Have you read this book?

       — Yes. But that one is ________ worth reading.

A．best　      B．more　　　     C．much　　　　              D．better

— Have you read this book?

       — Yes. But that one is ________ worth reading.

A．best　      B．more　　　     C．much　　　　              D．better

— Have you read this book?    — Yes. But that one is ________ worth reading.