1) Everybody (should/may) be over 18 to get into this night club.
2) I (must/had to) borrow my friend's car because mine broke down yesterday.
3) My son (didn't need to/could) swim so fast when he was young.
4) I think, you (might/should) take aspirin if your headache is getting worse.
5) We have enough people today, so we (can/have to) play some football.
Объяснение: