Walter offered us a lift when he was leaving the office, but our work ______, we refused his offer.

ass ______ forty-five students, in other words, forty-five students ______ our class.

Malaysia Airlines MH370 Flight ______ happened on March 8th, it has aroused a widespread concern around the world.

You will have to stay at home all day ______ you finish all your homework

I first met Lisa three years agoShe _______at a clothes shop at the time