根據句意及漢語提示完成句子
1. If you want to be healthy ,you must take more____（運動）.
2. Air travel is the most____（舒服的）way to travel long distances.
3. The family lived in a small house with no____（空間）for children to play.
4. People put their rubbish outside in the streets. As a result，there were many____（疾病）.
5. In the past, his grandfather worked 12 hours a day, in dangerous and____（不健康的）jobs,
for very little money.
