41.   The incidence of other sexually transmitted diseases has dropped during the same period by more than half, additional proof of condom use.

42.   The next day, the stock market dropped during the late-summer selloff.

43.   The rate often drops during contractions, but should return quickly to normal.

44.   The sale caps more than a year of wrangling over CBS, during which it dropped from first to third place in prime-time ratings.

45.   The series got more rigid when MGM dropped it during World War II.

46.   The tension in the city was high in the morning, but dropped during the day.

47.   Trading, in particular, tends to drop off during summer, analysts said.

48.   When he dropped out of college during the Depression, he found a job making salads in his hometown hotel.

49.   When the receivers were dropping too many passes during their first couple of practices, Harris drew on his experience elsewhere, devising a system of fines.

50.   Pioline became the fourth player to drop out during the tournament because of injury.