_______you write on a subject,you join in an ongoing, trans-historical conversation with others who have written about your topic.
It is not socially ____ for parents to leave children unattended at that age.
Fitness is important in sport, but of at least ______ importance are skills.
—Why didn’t you tell him about the meeting?—He rushed out of the room_____I could say a word.
According to statistics, a man is more than twice as likely to die of skin cancer _________ a woman.
As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel.