Q: Keywords: lake, leave, mountain
What is a sentence that includes all these keywords?

A: lake leaves a great reflection of the distant mountains

Q: Keywords: air, airport, plane
What is a sentence that includes all these keywords?

A: An airport with planes parked and one in the air

Q: Keywords: gorilla, observe, zoo
What is a sentence that includes all these keywords?

A:
this sort of behaviour is not unusual for gorillas and can often be observed at the zoo