Воткните модальный глагол:1. You ... smoke in public places -

Воткните модальный глагол:
1. You ... smoke in public places - its against the rule.
a) could b) mustnt c) cant d) have not
2. I can do it myself. You ... worry.
a) neednt b) can c) mustnt d) have to
3. Americans ... slap on your back in a minute after the first meeting.
a) may b) can c) must d) should
4. I think the girls ... wear longer skirts t school.
a) can b) are allowed c) are able d) should
5. Excuse me, ... I ask a personal question?
a) can b) might c) should d) need