—He       beintheclassroom,Ithink.—No,he       beinthec...

问题详情：

—He        be in the classroom, I think.

—No, he        be in the classroom. I saw him go home a minute ago.

A. can; may not     B. must; may not           C. may; mustn’t     D. may; can’t

【回答】

D

知识点：情态动词

题型：选择题