未知题型 My throat is _______. I cannot speak any more. A.sore B.purchase C.glow D.faint

未知题型 This is not what we asked you to do. You can not get more pay for the _______ work. A.owing B.device C.tired D.extra

未知题型 When the airplane takes off， the passengers are told to _______ their seat belts. A.fountain B.fix C.tight D.fasten