verbos modales inglés

Choose the modal verbs that are correct. There may be more than one!

There was a knock at the door. Theresa looked at me and announced, “That (1) may / might / must be George. He called earlier and said he (2) ‘d / ‘ll / ‘s drop by about this time”. I looked at how I was dressed: singlet, boxers with little hearts on them, and an open robe, and told her, “You (3) could / might / would have warned me! I look horrible!”