根据句意及汉语提示完成句子

1. If you want to be healthy ,you must take more____（运动）.

2. Air travel is the most____（舒服的）way to travel long distances.

3. The family lived in a small house with no____（空间）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.