Q: Keywords: belt, elephant, sit
What is a sentence that includes all these keywords?

A: A stuffed elephant sits near an airport luggage conveyor belt.

Q: Keywords: crop, spray, spring, tractor
What is a sentence that includes all these keywords?

A: a tractor and trailed sprayer spraying a young wheat crop in spring

Q: Keywords: breath, gun, hold, swim, way
What is a sentence that includes all these keywords?

A:
Someone, swimming in the Bug's intestinal fluid, tries to make his way to the gun, holding his breath.