【题目】— What should I do with this passage?
— _______ the main idea of each paragraph.
A.Finding out
B.Found out
C.To find out
D.Find out

【答案】D
【解析】句意：—对这篇文章，我应该做什么？—找出每段的段落大意。根据句意，这里需要用动词原形构造表示建议的祈使句，相当于省略了you should的完整句子You should find out the main idea of each paragraph.故选D。