Jack may be upset. I can't really tell if he is annoyed or tired.
Jack may have been upset. I couldn't really tell if he was annoyed or tired.
Jack may get upset if you don't tell him the truth.
May I make a phone call?
You may leave the table when you finish your dinner.
I must visit my grandmother.
I must read the book.
I must do my homework.
I must help my father.
Jack may be upset. I can't really tell if he is annoyed or tired.
Jack may have been upset. I couldn't really tell if he was annoyed or tired.
Jack may get upset if you don't tell him the truth.
May I make a phone call?
You may leave the table when you finish your dinner.
2)I must wash the dishes.
3)I must to read the book.
4)I must go to school.
5)I must walk on the streets in the evenings.