Complete these sentences with should(n`t), can(`t) or (don't) have to.
1)You _____spend the night at my flat. We have a spare bedroom.
2)Young people in my country ____ do military service. It stopped last year.
3)I think everyone___ vote at elections. It's our duty as citizens.
4)Maria ___ come if she doesn't want to.
5)I think people___ come to work in jeans. It looks really bad.
6)In the UK children___stay at school until they're sixteen. It's the law.