Complete the saying: "What you don't know can't..."

Complete the title of Little Richard's 1958 song "Good Golly, ___". Reese Witherspoon made her feature film debut in 1991's "The Man in the ___". Complete the title of Agatha Christie's 1939 novel "And Then There Were ___". Complete the title of Marjorie Kellogg's 1968 novel "Tell Me That You Love Me, ___". Which composer's Fifth Symphony, completed around 1808, was one of the first symphonies to use trombones? Which Debussy orchestral work, composed around 1905, contains the movement "Play of the Waves"? Which composer's last symphony, No. 104 in D major from 1795, is known as the "London"? Composer Benjamin Britten was born in 1913 in Lowestoft, in which English county?