51.   The question soon became by how much.

52.   The shortage could become critical by the beginning of next year, Hafers said.

53.   The Republican chastised the president for reports that the administration has been expediting the process by which immigrants become citizens.

54.   The woman was well past menopause, but she became pregnant by using a donated egg from a much younger woman.

55.   There is no fee for joining the coalition, but people automatically become members by making donations to the organization or by volunteering for it.

56.   Their ascent into the pantheon of pop culture figures was secured, he added, when they became the butt of jokes by Jay Leno on late night television.

57.   They form part of a pattern that has by now become something of a chestnut among students of American political history.

58.   They became rich by imagining the unimaginable, and making it happen.

59.   Under rules both agencies hope will become law by the end of the year, the Surface Transportation Board would therefore gain a new safety mission.

60.   Unfortunately for Giuliani, Cuomo had by then become such a crashing bore that even the state senator from Peekskill looked like Teddy Roosevelt.