Grammar: Choose the correct item (*1, max 10)

21. May I have some information about Performing Arts Universities in Britain, please?
22. She can't have been at the party last night. She is on holiday in Italy right now.
23. Jack has got a headache. He shouldn't sleep well recently.
24. Mary may have to leave school early tomorrow. She has a dentist appointment after school.
25. George must have studied a lot for the history exam. He got very high marks.