单选题 In recent years, there have been over 30 foreign companies ______ business in this city.
【正确答案】 A
【答案解析】[解析] 句意:近年来,已经有30多家外资企业在这座城市经营生意。非谓语动词题。根据题意可以知道此处是现在分词作后置定语。因此选择A项。