One way to understand thousands of new words is to gain _____ good knowledge of basic word information.
Green products are becoming more and more popular because they are environmentally _________.
—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.