介词专练100题1_ the age of ten, she had learned to play the piano.AAfterBInCAtDBy2The old man took a walk every day _ when it rained.AexceptBbesidesCbesideDas3Look at Lucy! How happy she looks _ her new dress.AafterBforCatDin4His mother bought him a new bicycle _ the morning of his eighteenth birthday.AonBinCatDbefore5 The new dress looks very nice _ you.Thank you. Im glad you say so.Afor