chuyển thành câu gián tiếp 81. “ What were you doing with these skeleton keys?” said Mr. John. ............................................................................................................................ 82. “ Did you sleep well?” asked my hostess. ............................................................................................................................ 83. “ Have you been here long?” the other students asked him. ............................................................................................................................ 84. “ Can you tell me why Paul left the university without taking his degree?” Paul’s sister asked. ............................................................................................................................ 85. “ How many people know the combination of the safe?” said the detective. ............................................................................................................................ 86. “ Are there any letters for me?” said Mary. ............................................................................................................................