Fill in the gaps with the correct words.

1 The best ... in world take part in the World Chess Championship.
2 He was lucky to be among the hundreds of ... that managed to get tickets for the match.
3 Food companies must be extremely careful with the quality of products they offer to ... .
4 Iron Will, one of the youngest ... in the race, won by at least three minutes.
5 Mark and Jeff are radio ... , they have a show every evening from Monday to Friday at 10.
6 Do you like indoor ... or do you prefer outdoor activities?