1.It can not be that she is so young. She must be at least thirty years old.
2.There must be thick forests around your village.
3.It can not be that he wrote a letter so quickly.
4.Maybe we will go to the beach: the weather is wonderful.
5.This is obviously a very ancient manuscript.
6.Let's call Robert: we may need his advice.
7.Hurry up: you may be late for the train.
8.He may be sick.
9.He must be sick
10.It can not be that he forgot to buy flowers.
11.It can not be that he quarreled with her.
12.She probably found out about it from Masha
13.This must have been a very difficult task.
14.It must be very cold outside.
15.She must have met them on the way home.
16.It can not be that they sold their house.
17.They may come tomorrow.
18.My sister must be in the library now.
19.It can not be that he took the first place.
20.Maybe he heard about it though hardly).
21.Mom must have bought some candy.
22.She may have called me yesterday, and I was not at home.