Respuesta:
1) Joe plays football.
2) I can swim very fast.
3) Some people don't like sports.
4) The sled races in Alaska are very exciting.
5) Huskie Dogs are used in sled races.
6) Many people wear white clothes to play tennis.
7) To play baseball, you need a bat and a ball.
8) In American football, the ball is long and brown.
9) In European football, the ball is round and black and white.
10) Ellen has a trophy for ice skating.
11) There are nine people on a baseball team.
12) Hockey is dangerous because the other team hits you in the teeth.
13) My father likes to play basketball.
14) Elsa's brother is a skiing champion.
15) John is the best runner on the team.
16) Sally is very good at gymnastics.
17) She plays volleyball with her sister.
18) There are many soccer teams.
19) Athletes must train and practice.
20) Mary likes to roller skate.
