【单选题】One afternoon in January 1989, Susan Sharp, 43, and her 8-year-old son, David, were walking hard【C1】______an icy parking lot,【C2】______Susan's cane slid on the ice. She【C3】______face first into the mu...
【简答题】单句语法填空 1. After the war , a new school building was put up ________there had once been a theater . 2. It was once a time________I had no interest in study and wanted to drop out of school. 3. ________...