Bonjour, j'aurais besoin d'aide pour mon qcm d'anglais :

1.It’s high time you… on the case study for the constitutional law course. It’s due by the end of the week. (start/are starting/started/will be starting)
2. We went to a great student party last month. You … come. Why didn’t you? (should have/ had to/must have/should)
3. I can feel a sharp pain on my right side, I … go to the hospital to have this checked out. (might have to/must to/might had to/might to)
4. Our English teacher is not here yet. She … be sick because she is always on time. (can/should/must/is able to)
5. Don’t worry ... late tonight. (when I am/if I'll be/ if I am/ when I'll be)

Merci d'avance