问题
单项选择题
The retired man donated most of his savings to schools damaged by the earthquake in Yushu, （） the students to return to their classrooms.
A. enabling
B. having enabled
C. to enable
D. to have enabled
答案
参考答案：A
解析：
不定式引导目的状语从句，这里要引导结果状语从句，故排除C和D。这里应该用现在分词作状语。B项表示该动作发生在谓语动词所表示的动作之前，排除B。故 选A。