The more one is ______ the English-speaking environment, the better he or she will learn the language.
The manager meant ____ the workers that being 5 minutes late meant ____ the company.
His parents died when he was five, so he was by his uncle.
My mother would not permit me back late.
—Do you mind if I open the window? —.
Great changes ______ in China in the past 20 years.