what should i do with the article._____ (find)the key sentence first

问题描述:

what should i do with the article._____ (find)the key sentence first

What should I do with the article?(Find) the key sentence first.
我该怎样读这篇文章?首先要找到关键句.
这是个动词原形开头的祈使句,所以就填find.