31.   There, they use gasoline engines.

32.   They fly primarily between continents and save fuel by using two engines, one fewer than older airplanes of similar size.

33.   This truck could use an engine like that.

34.   Toyota markets a green image in advertisements and is the only company besides Honda to sell cars that use hybrid engines powered by gasoline and electricity.

35.   Using search engines, the association can easily find student Web sites that offer pirated songs.

36.   We use search engines.

37.   You can pedal less and use the engine to make up the difference, or use the engine fully without pedaling.

38.   A protest has been filed against the American yacht Toshiba for using her engine during the fifth leg of the Whitbread Round the World Race.

39.   Although search engines are widely used on the Internet, most users have not had any specific information training.

40.   Even if a chopper makes it in, it must use its engines constantly to avoid putting all of its weight on the unstable volcanic rock.