The World War II made______ impossible for Einstein to go on with his research.
I greeted the teacher with ‘ hello”, and the teacher gave me a sweet smile _________________.
Do you know the trouble he had ______________ the work?
In the great war, he was lucky to escape ___________.
I ___________________ to stay out in the cold ___________ spend the night there.
___________ words and expressions have coming into the English language from American English.