Choose the correct options to complete the sentences

1. Tim, do you think violent sports
   [was able to|should|shall] be banned?
2. I strongly believe violent games
   [must|might|could] be banned.
3. I think such aggressive activities
   [don't have to|might not|mustn't] help people to live together peacefully.
4. We
   [ought|could have|could] at least improve safety standards of such kinds of sport.
5. He
   [can|may|has to] ski really well, despite his recent injury.
6. People who take part in violent sports
   [have to|may|would] risk receiving serious injury.
7. We
   [need to|ought|has to] provide better protective clothing.
8. This way, serious injuries
   [has to|shall|would] be reduced.