7. Insert prepositions or post-verbal adverbs.

1. On the one hand, professional sportsmen try to win and break records. Amateur sportsmen, on the other hand, go in for sports to be healthy and to feel well. 2. Football and tennis are very popular among children. 3. Games improve velocity of reaction and ability to take quick decisions. 4. Why is sport so important for us? 5. In such games as football, basketball and hockey, more than two players take part.