51.   But when a thank you or an expression of love comes your way, guilt knocks at your door.

52.   But with nobody knocking at its door to buy the teams, Disney continues on without commitment to its sporting enterprise.

53.   Community organizations and immigrant advocacy groups began getting more calls, more knocks at their doors.

54.   Customers begin knocking at her back door before sunrise.

55.   Delivery men bearing bouquets, balloons, gift-wrapped liquor and cards with congratulatory messages keep knocking at the door.

56.   Elvis was finally beginning to relax when someone knocked at the door.

57.   He may as well have had a communicable disease, for no one came knocking at his safe deposit box.

58.   He knocked at the apartment and identified himself.

59.   I thought we were knocking at the door against Kentucky.

60.   If Iowa State can knock off either Kansas State or Texas at Hilton Coliseum, it could escape the last-place seed.