11.   For example, we cut the number of aircraft out for maintenance at any given time by three fourths.

12.   He whiled away the time by contemplating the stained glass lancet windows behind the preacher and the holy table.

13.   Her adoptive parents were told at the time by doctors that her natural parents had abandoned her.

14.   If we define them simply, primary sources are those written at the time by some one usually connected with the event.

15.   In each case contestants are voted out one at a time by their colleagues and by viewers until just two are left.

16.   In effect, this machine dissected time by the weighing of successive equal quantities of fluid.

17.   Make sure he is occupied in healthful activities and does not spend a great deal of time by himself.

18.   Man has greatly changed himself as a person in the same period of time by changing the world in which he lives.

19.   Perhaps he could save time by collecting the money now.

20.   Philip Drew had also been seen at the relevant time by a stagehand.