It's a track used for Formula 1 racing or motorcycling.

(a)  

You can play tennis and basketball on this.

(a)  

The people who go and watch a sports event.

(a)  

It's a sport you can play on ice or grass.

(a)  

Before you do any kind of exercise, it's very important to do this.

(a)  

When this happens to you, you may have to see a doctor.

(a)  

Camp Now, the Maracana, and Old Trafford are all famous examples of this type of building.

(a)  

It's a verb which describes when two teams have the same score at the end of a match.

(a)  

It's the person who shows a red card in a football match.

(a)  

It's a sport where you jump, head first, into a pool.

(a)  

In this sport, you go around a course of nine or 18 holes.

(a)  

It's a phrasal verb which means "go to a gym and do exercise".

(a)  

It's what professional atheletes have to do every day.

(a)  

It's the opposite of "win".

(a)  

There are 30 on the pitch in a rugby match, but only 22 in a football match.

(a)  

It means to hit, e.g. a ball, with your foot.

(a)  

It's the name of a person who gives instructions to the members of a team, but who doesn't play.

(a)  

It's a person who supports a team.

(a)  

It's where you play indoor sports.

(a)