31.   Drugs have been used before to block diet-induced cholesterol build-up, but not to slow or stop stress-induced cholesterol.

32.   Erickson outlined the criteria paleontologists use before going out on such a professional limb.

33.   He described the move as a tactic that has been used before by the Bosnian Serbs to harass aid convoys.

34.   He even scripted some of the speeches he used before regular-season and playoff games.

35.   He was the creator of the Stanza movement, a modification of the Mitchell movement in pairs play, widely used before the introduction of computer scoring.

36.   I remember using it before.

37.   If the driver uses the turn signal before moving into an occupied lane, an audio alarm will sound.

38.   In a high, childish voice that she had never used before, she made her apology.

39.   In a nasal spray form, andro was used immediately before competition.

40.   In Brazil, the government has a band within which the real trades, the strategy Mexico used before its devaluation.