Q: Keywords: begin, flower, spend
What is a sentence that includes all these keywords?

A: seed pods begin to form as soon as the spent flower falls off

Q: Keywords: cake, cupcake, smash
What is a sentence that includes all these keywords?

A: under the sea smash cake and cupcake

Q: Keywords: airplane, runway, snow
What is a sentence that includes all these keywords?

A:
The airplane is stopped on a runway surrounded by snow.