She the book sometime in the past as there is no way she could have answered the questions so accura

【题目】She _____ the book sometime in the past as there is no way she could have answered the questions so accurately.

A. ought to read B. must have read

C. must read D. should have read

【答案】B

【解析】

试题分析：考查情态动词。句意：她肯定读过这本书因为她不可能准确无误地回答这个问题。根据there is no way she could have answered the questions so accurately可知表示对过去的肯定推测，故选B项；

考点 : 考查情态动词