第3题: [单项选择]Trouble was expected at the football match, so the police had to be there ______. A. in plenty B. in full C. in number D. in force 参考答案:D 答案解析:in plenty意为“很多,过优裕的生活”;in full意为“完全地,全部地”;in number意为“总共,在数字上”;in force意为“大批地,大规模地”。句子的主语是the police