Q: Keywords: boat, couple, moor
What is a sentence that includes all these keywords?

A: fishing boat moored close to the estuary with couple working

Q: Keywords: boot, explain, polish
What is a sentence that includes all these keywords?

A: A man is untying his boots explaining that by doing so, you won't get polish all over your laces.

Q: Keywords: conductor, flute, stage
What is a sentence that includes all these keywords?

A:
Students on stage are playing clarinets and flutes while a conductor conducts them.