51.   AIDS experts said the sustained drop, which the Centers for Disease Control and Prevention began reporting six months ago, has several causes.

52.   Again, we have no cause for concern.

53.   But after seeing this fine production, the only people who could have any cause for complaint are Shakespearian purists demanding bardian correctness.

54.   But dyslexia, which can range from mild to severe, has many causes, and scientific studies and clinical research have yet to pinpoint a specific treatment.

55.   But establishing these risks is often complicated because many diseases take years to develop and may have numerous causes.

56.   But Frye, who went out to dinner without learning the test results, said he had good cause to suspect the worst.

57.   But he was not detained in jail, and Potts insisted that the police never had sufficient cause to do so.

58.   But he was not detained in jail, and Potts insisted that the police never had sufficient cause to detain him.

59.   But if we can believe what we see in the movies, no one has any cause for concern.

60.   But if Sipser had a favorite cause, it was musicians.