"(They Long to Be) Close to You" was a 1970 hit for which brother-sister duo?

"Solitary Man" was the first hit for which singer-songwriter? Which 1970 hit's title could describe a "structure spanning agitated H2O"? T. Harry Williams won a 1970 Pulitzer Prize for his biography of which Louisiana "Kingfish"? Complete the title of Ursula K. Le Guin's novel: "The Left Hand of ___". Which William H. Armstrong novel about a coon dog in the Deep South won the 1970 Newbery Medal? "We've Only Just Begun" (1970) and "Calling Occupants of Interplanetary Craft" (1977) were recorded by which duo? Which 1970 film begins "What can you say about a twenty-five-year-old girl who died?" Who had his breakthrough in 1970 with "Your Song"?