1.She passed along me on the street. May be she didn't see me.
2.Denis passed the exam very easy. May be it wasn't difficult.
3.He may be is coming today.
4.It may be isn't late for that.
5.I don't think he's coming tonight-may be he missed the train.
6.He should be at home now.
7.Wait for a while she should be coming soon.
8.I think you said what you didn't have to say.
9.If she doesn't know, he should have forgotten to tell her.
10.He can't be such a liar.
11.I think you did something wrong.
12.Where is my book.It could be on the desk.