I left out a last paragraph. Thank you very much, Writeacher.

Question

1) In a tennis match there must be around sixty tennis balls, because everything happens very quickly.
2) The players must also have a lot of rackets, because if a player breaks his racket, he can change it. Tennis matches are very long.
3) They last around 3 hours . To win a match you must win 2 sets and a set is made up of six games .

Answer 1

1) In a tennis match, there must be around sixty tennis balls because everything happens very quickly.

2) The players must also have a lot of racquets, because if a player breaks one, he can use another. Tennis matches are very long.

3) They last around three hours. To win a match, a player must win two sets; each set is made up of six games .