John ( ) be in the classroom because I saw him in the library jus_英语解答

John ( ) be in the classroom because I saw him in the library just now.
A.mustn'tB.isn't able to C.can't D.may not

人气：113 ℃　时间：2020-04-13 14:56:18

解答

C.can't 表示非常绝对的判断.
因为前面所说,可以推断.