What might a couple do in a canoe? - marry each other - make sex - communicate - fishing - row about  The best answer is
row about

Where could you find 10 or 100 home that are not attached together? - denver - neighborhood - city or town - michigan - apartment building  The best answer is
neighborhood

Where should a ventilation system be closed? - house - office building - in the attic - hospital - large building  The best answer is

hospital