He is a bad manager in that factory and everyone is attempting to avoid him. (Avoid → Avoidance)

A healthy lifestyle has its advantages and disadvantages. (Healthy → Health)

My brother has been a stamp collector for several years. (Collect → Collector)

Ants and bees are described as social insects. (Social → Sociology)

The first time I tried out my new bike I lost and fell off. (Lose → Lost)

Encouraging children to eat and drink properly is very important. (Proper → Properly)

Please give donations to that charity to help the homeless after the flood. (Donate → Donations)

The baby slept very comfortably because the bed was really comfortable. (Comfortable → Comfortably)