Having a good command of the language of the country where you are going to study is necessary, because language skills affect you perform academically.
Great changes ___ in our city since 1977.
The fact has worried many scientists ______ the earth is getting warmer and warmer these years.
—How about your journey to Mount Emei? —Everything was wonderful except that our car _________ twice on the way.
—Do you mind my opening the window? It’s a bit hot in here. —, as a matter of fact.
The traffic is heavy these days, I arrive a bit late, so could you save me a place?