_______the Second World war broke out?
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.
_____ the vegetables to go bad, he preferred to sell them at half price.