пожалуйста помогите очень безотлагательно!When I was young I ... swim very

Пожалуйста помогите очень безотлагательно!
When I was young I ... swim very fast.
a) could to
b) can
c) was able
d) could
2. You ... smoke in cinemas in Moscow.
a) cant
b) dont have to
c) mustnt
d) neednt
3. You ... wake up early tomorrow, the school year is over.
a) shouldnt
b) dont have to
c) neednt to
d) mustnt
4. I think the girls... wear longer skirts to school.
a) should
b) must to
c) must
d) should to
5. Excuse me,... ask you a personal question?
a) can I to
b) may I
c) must I
d) I may
6. Excuse me,... tell me the way to the nearest underground station?
a) you could
b) you cant
c) could you
d) you have to
7. School children ... to leave school before the lessons finish.
a) are not allowed
b) couldnt
c) cant
d) mustn't
8. How often ...see your dentist?
a) must you
b) can you
c) have you to
d) do you have to
9. If they come on time, we ... watch the match together.
a) can
b) will be able to
c) could
d) will able
10. I ... repair my used car twice since I bought it.
a) have had to
b) have to
c) must
d) had to