The secretary worked late into the night, a long speech for the president.
A. to prepare
B. preparing
C. prepared
D. was preparing
网友回答
A. to prepare
(答案→)B. preparing
C. prepared
D. was preparing
解析:考察分词做状语。本题中的主语the secretary与动词prepare之间构成主动关系,故使用现在分词在句中作状语。句意:那位秘书熬夜工作到很晚,在喂主席准备一个很长的演讲稿。故B正确。