根据句意及首字母提示完成句子。 1. —Did your sister use to have straight hair? —No, she used to have c_________ hair. 2. Mr. Green is really s _________, for he never smiles. 3. Amy used to be quiet, but now she is very o_________. 4. —Did you u ________ to play the piano? —Yes. I used to play the guitar, too. |