41.   A lot has happened to Morrison since then.

42.   A lot has happened.

43.   A lot is happening on the museum scene.

44.   A lot was happening but all we got was more tinsel.

45.   A lot already has happened, with Tropical Storm Barry bearing down on the Gulf Coast.

46.   A lot happens during that year and a half.

47.   A lot has happened in the interim.

48.   A lot has happened in the last four decades, and the series has had to evolve as well as expand.

49.   A lot has happened since an army of federal agents and the national media converged on Ruby Ridge six years ago.

50.   A lot has happened since Sievers, of MUFON, witnessed his first UFO.