One dark and stormy night, an elderly man and his wife entered the hall of a small hotel in Philadelphia, hoping to get shelter for the night. The clerk, a friendly man with a beautiful smile, explai
71. The school rules that no child shall be allowed out of school during the day, unless _____(陪伴) by parents. 72. We want to make sure that our food supply is _____ _ (充裕)for all of us.
While building a tunnel through the mountain, _____. A. an underground lake was discovered B. workers discovered an underground lake C. there was an underground lak