Read the following paragraph and underline the topic sentences.
Ordinary People is a movie about the problems faced by a family. Before the film opens, one of the teenage sons has drowned in a boating accident. The other son attempted suicide and was hospitalized. Unable to forget her dead son,the mother has difficulty communicating with her surviving child. This lack of communication eventually leads to the break of the family.
【正确答案】：Ordinary People is a movie about the problems faced by a family.
【题目解析】：p139
