21.   Endless tinkering by scientists has produced some hybrid perennials that bloom more than once a year or for longer periods than normal for the species.

22.   Enron has dismissed the problems at the energy services unit as normal for any start-up.

23.   Far beyond the orbit of Jupiter, it is nevertheless much brighter than normal for a comet so distant from the Sun.

24.   For much of the year, Starks had seemed almost too polite and too normal for the teammates who knew him.

25.   For Tate, getting married might be normal for a single character.

26.   Grocery shopping, for example, is normal for most teens.

27.   Homes that sold in the Valley during October had been on the market on average for about three months, which is normal for a healthy market.

28.   In fact, Bartlett said, there is often more work than normal for the staff left behind.

29.   Indeed, it is normal for emerging economies that are seeing rapid productivity growth to experience a rise in their real exchange rates.

30.   It is normal for people to put off having children when the future looks doubtful, so the change made sense.