Instructions Full Game: These are multiple-choice quizzes with four possible answer choices that include all questions in a given set.     
Given the lyric, identify the Billboard #1 hit.
1977: "Love soft as an easy chair. Love fresh as the morning air. One love that is shared by two. I have found with you. Like a rose under the April snow. I was always certain love would grow."
"Southern Nights"
"You Light Up My Life"
"How Deep Is Your Love"