The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.

Most five-year-olds can express themselves fluently with a variety of words and can understand an even larger variety of words used in conversations and stories. If children have been exposed to books and heard stories read and told, they have begun to develop an interest. in what print says and how it is used to express ideas; a concept of story and story structure; and an understanding of the relationship between oral and written language.
Cognitive and language （） in children.