【单选题】This book is worth ______.
【单选题】This book is worth _____.
【简答题】This book is worth ______ . A to read B.reads C.read D.reading
【单选题】This book is worth _____.
【判断题】Compared with second-intention healing, the inflammatory reaction of healing by first union is more intense.
【简答题】The question is _______ this book is worth writing.
【单选题】This book is worth ( )twice.