Answer | Crossword Clue |
---|---|
UFO | It may be produced by swamp gas |
UFO | It could be created by swamp gas |
DIN | It may be produced at a construction site |
FUEL | It may be a gas |
TANK | It may be full of gas |
ENGINE | It may be gas-burning or hybrid |
BOILER | It may be gas- or oil-fired |
AIR | It may be free at the gas station |