---Did you look up the time of trains to New York? --- Yes, but the early train has been cancelled _______ the heavy fog.
Teenagers ______ their health because they play computer games too much.
The World War II made ______ impossible for Einstein to go on with his research.
It’s not ______ good idea to drive for four hours without ______ break.
—The government should think about the medical reform again and take measures to improve it.—___________. The medical services and efficiency are not good at the moment.
The boys, ________ with this somewhat terrifying figure, had lost their tongues.