What does the word uncovering the truth mean in a book? be specific and give examples

Read the paragraph. [1] cory tried out for his school play, rumors, by neil simon. [2] cory got the part of “ken.” [3] cory attended rehearsal every day after school, and he practiced his lines every night. [4] cory was fantastic on opening night. [5] cory made the audience laugh! why does this paragraph lack sentence variety?