Canyoutellme_____makesthisbooksopopular?A.whatisitwhichB.whatitisthatC.whatitiswhichD.whatitis

问题：Canyoutellme_____makesthisbooksopopular?A.whatisitwhichB.whatitisthatC.whatitiswhichD.whatitis

答案：↓↓↓

常昌远的回答：

网友采纳　　B.是什么使这本书如此畅销　　whatitis是什么　　that跟着前面是典型的强调句句型：itis...that.