Complete the grid. What's the hidden word?
1) A .... rolls down a hill, at high speeds, strapped inside a large plastic ball.2) He got a nasty ..... on the head when he fell.3) With his .... , the boy was able to stay underwater and look at the fish.4) .... is possible wherever there are hills of sand.5) Sam is .... to extreme sports!6) There were 100 ..... in the writing contest.7) Underwater hockey .... in Britain where it was invented by a diving club.8) The hidden word is ..... .
