______ regular exercise is very important,it's never a good idea to exercise tooclose to bedtime.(2011 .天津)
Prices of daily goods________through a computer can be lower than store prices.
The poor little boy________by his heartless parents was seen begging in the street.
Throughout history,the language________by a powerful group spreads across a civilization.
Nobody but doctors or nurses and those __________ by Dr. Hu ________ to enter the patient's room.
________ terrible weather it was when tsunami and earthquakes happened in Japan.