Q: Keywords: bike, maintenance, perform
What is a sentence that includes all these keywords?

A: A boy is performing maintenance on his bike.

Q: Keywords: disease, reveal, risk, study
What is a sentence that includes all these keywords?

A: study reveals that smokers remain unaware of the risks associated with disease

Q: Keywords: car, change, oil
What is a sentence that includes all these keywords?

A:
A man changes the oil in a car.