Go to the website and you will be able to / have to buy your tickets there.

The umpire can’t / mustn’t be serious! That ball was in!

Jon may / must have been waiting for his coach, but I’m not sure.

She ought to / must have a rest – she looks a little tired.

According to the rules, players aren’t able to / allowed to run with the ball.

It wasn’t necessary for them to bring their rackets, we had plenty of spares. NEED - They ________ their rackets, we had plenty of spare ones.

She used to race around the rink like a professional when she was younger. COULD - When she was younger, she _______ rink like a professional.

I mustn’t / shouldn’t have stayed up all night playing video games.

I’d love to be able / have to swim as well as you – you make it look so easy!

We don’t have to / shouldn’t take any equipment. It’s provided by the organisers.

You ought to / can improve your serve because it’s a bit weak at the moment.

To enter the competition you must / are able to register by 12 pm on Friday.