Century High School Drama dress rehearsal of the musical Mama Mia! Performances on April 3, 4, 11, 12. Ali, from left, Sophie, and Lisa, played by Jane Simon, Vanshika Pallerla, and Ava Persaud read from a diary during a rehearsal of Mama Mia! at Century High School.(Thomas Walker/Freelance) Rosie, from left, Donna, and Tanya, played…