1. It rained heavily in the south，_ serious flooding in several provinces.（2010 天津）A. caused B. having caused C. causing D. to cause 2. _at my classmates faces, I read the same excitement in their eyes.（2010 北京）A. Looking B. Look C. To look D. Looked3. Lots of rescue workers were working around the clock, _supplies to Yushu, Qinghai province after the earthquake.（2010 福建）A. sending B. to send C. having sent D. to have sent
