Answer:
Ex1
1. Some players have recognized the need for practice.
2. They have started their warm-up routines.
3. They have walked to the practice field very early.
4. They have arrived in time to hear the coach's instructions.
5. They have followed every bit of advice.
6. They have devoted the extra time.
7. The coach has watched the games.
8. She has noticed some real weaknesses.
9. She has identified items for practice.
10. She has planed an intensive practice.
11. She has called an early practice this evening.
12. Some players complain about the work.
13. Most players have agreed to the new rules.
14. They have realized their weaknesses.
15. They have experienced the benefits of practice.
16. They have arrived at school early for more more practice.
17. Some have practiced for three hours.
18. Others have promised weekend practice.
19. The students have hoped for victory.
20. They have worked very hard for it.
Ex 2
1. The skater had earned a medal by he age of six.
2. She had wanted a place on her school's skating team.
3. The speed skater had tried twice before.
4. She hd practiced daily.
5. The team had welcomed her into the group.
6. They had wished her the best of luck.
7. The spectators had noticed the new skater.
8. Her skating had improved dramatically.
9. They were pleased that had earned a place on the tear.
10. they had celebrated her first victory.