Add the letters 'Pro'. Ex: Pro + sheet of glass = Gas used as fuel. Answer: Pro + pane = Propane.
-1. Pro + make = Reproduce. 9 letters
-2. Pro + channel (often for air) = Manufactured article. 7
3. Pro + behind time = Elongated (when referring to a spheroid). 7
-4. Pro + situation; locale = Suggestion; recommendation. 11
-5. Pro + take as one's own = Declare (publicly). 8
6. Pro + electrical safety device = Prolific; abundant. 7
-7. Pro + healthy = Financial gain. 6
-8. Pro + farm vehicle = Angle-measuring instrument. 10
-9. Pro + movement = Upgrading; advancement. 9
-10. Pro + one thousandth of a kilogram = TV or radio show. 7