Although they are roommates, they are not close _______each other. 2. For them, there is no social life to speak _______. They are too busy. 3. I’m afraid that he will be overcome _______shock on hearing the news. 4. Don’t try to travel to too many places _______a time. You will be tired out. 5. Our next discussion will focus _______how to improve the city’s air quality. 6. Contrary _______what most of us believed, she is married and has already had a baby. 7. _______the past three years, he has been attending evening classes to study English. 8. He knew it was his carelessness that had caused the accident, but he didn’t want to admit _______it in public.