She searched ___.
The school rule states that no child shall be,unless________by an adult,allowed out of the school during the day.
—How do you deal with the disagreement between the company and the customers? —The key________ the problem is to meet the demand____ ____by the customers?
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.