Read it through once

By the second week, every one knew perfectly well what was going on, yet every one tried to look as if they were stone-blind to the changes in Jo's face. They never asked why she sang about her work, did up her hair three times a day, and got so blooming with her evening exercise; and no one seemed to have the slightest suspicion that Professor Bhaer, while talking philosophy with the father, was giving the daughter lessons in love.