As nobody here knows what is wrong with the machine, we must send for an engineer to _________ the problem.
—The sports meeting is due to be held next Monday. —_________ it rains? —Try to put it off.
Health problems are closely connected with bad eating habits and a _________ of exercise.
She was chosen to be the first secretary of the state government and has regular and immediate _________ to the president.
Washington, a state in the United States, was named _________ one of the greatest American presidents.
It is outer space might provide us with new energy sources.