.---How did you know the surprising news? ---I happened _______ the event then.
—I’m going to see John tomorrow. —Don’t tell him the result of his medical examination when you __________ to him.
People around the country were excited __________ the astronauts came back to the earth safely.
—I’ll call Bob and tell him the good news. —You __________ do that. He was here just now and heard it.
Susan __________ for our newspaper any more. She has been hired by a fashion magazine.
We should go to the cinema early. __________, there won’t be any tickets left.