21.   As the day progresses, filaments of high, thin wispy clouds will streak across the skies from the lower Great Lakes to the northern Middle Atlantic States.

22.   As the day progresses, this cluster of showers and storms will slide toward the western Great Lakes, affecting Chicago and Milwaukee by evening.

23.   As the day progressed, more people left their seats to shop for motivational tapes and books at the rear of the arena.

24.   As the day progressed, there was no sign of any plane.

25.   As the day progressed, those vague fears developed a specific focus.

26.   As the day progresses, the entire area will tend to fill with clouds.

27.   But as the day progressed with no real disasters in sight, residents seemed to become fixated on things scatological.

28.   But as the day progressed, a seesaw bout took place as the index swung between negative and positive.

29.   Charles awoke each morning with a severe headache that eased as the day progressed.

30.   However, the market shook off these problems as the day progressed.