I think LiMing ---in the teacher's room. a,maybe b,isn't c,m

选D,首先从句中LiMing ___in the teacher's room缺少谓语,所以排除AC,A是副词,不能做谓语的,不能与D混淆,D是may+be是两个单词,B的话意思可以,但在这里不行,原因上边几位没说清楚,因为think引导的从句是需要否定前移的,要是选B,应该是I don't think LiMing is in the teacher's room。所以选D。有什么疑问还可以问我,我一直在线。