Зачем по два, если в примере всё в одном предложении?
1. The man felt happy because he had won the race.
2. The man felt unhappy because he had lost the key to his car.
3. The man felt excited because he had got a new computer as a present.
4. The boy felt sad because his favourite team had lost the match.
5. The boy felt enthusiastic because he had taken a part in a conference.
6. The girl felt sick because she had eaten a lot of ice cream.
7. He felt in trouble because he hadn't done his project in time.
8. The boy felt thrilled because he had taken an autograph from his favourite actor.