1 bad

2 harmful

3 unhealthy

1 good and honest

2 kindhearted

1 to educate

2 to teach

3 education

1 flourishing

2 bustling

1 good

2 favorable

3 well

4 fine

1 long illness makes the patient into a good doctor (idiom)

1 names of many kinds (idiom); items of every description

1 devoid of conscience (idiom); utterly heartless

1 to sit and waste a good opportunity (idiom); to lose the chance

1 to plant trees in order to stabilize sand (idiom)