Question

【题目】一I think our teacher, Mr. Allen, knows everything.

一That's true. He over 2,000 books.

A. is readingB. has readC. was readingD. had read

Answer 1

【答案】B

【解析】

句意：——我想我们的老师艾伦先生什么都知道。——这是真的。他读了两千多本书。考查动词时态辨析。本句强调过去的动作read对现在造成的影响knows everything，需用现在完成时“have/has + done”结构。根据句意语境，可知选B。