We were having a meeting _________ suddenly someone knocked at the door.
Shortly after the accident, two___________ police were sent to the spot to keep order.
___________lessons were not difficult.
My dictionary__________. I have looked for it everywhere but still
—You don't seem to be quite yourself today. What's wrong? —Oh, I'm suffering from a cold. Nothing serious,________
____________professional violinist practices for several hours a day, but____________ violinist has his own way of playing the Beethoven concert.