问题
单项选择题
Dina,（）for months to find a job as a waitress, finally took a position at a local advertising agency.
A. struggling
B. struggled
C. having struggled
D. to struggle
答案
参考答案：C
解析：
struggle和句子主语Dina在逻辑上构成主谓关系，且发生在谓语动词take之前，因此用现在分词的完成式结构．在句子中作状语。