She spent a happy afternoon her coins and stamps she had collected those years.
A. to look for
B. worked on
C. sorting out
D. watch over
网友回答
A. to look for
B. worked on
(答案→)C. sorting out
D. watch over
解析：考查动词短语：A. to look for寻找B. worked on从事C. sorting out分类，整理D. watch over监管，谓语动词是spend 后面接time （in） doing，句意：她花了一个快乐的下午把她这些年收集的银币和邮票分类。选C。