______ twice a year, whether it is a car, a bus or a truck, is the rule that every driver must obey in this city. A Having been examined B Examined C Being examined D Examing
—Why, Jack! Someone seems to have called you over there.—Yes? I _______ that.
In order to improve English listening, _______.
Twenty students from one high school were _______ such an experience.
Sometimes I was thinking about _______ my own how I could make friends with a man who had little _______ common with me.
Walter offered us a lift when he was leaving the office, but our work _______, we refused the offer.