A.fuel B.frown C.fulfill D.frost 30.Please do not _______ when somebody else is talking. A. intend B.interpret C.interupt D.invest 31.As a commander, you should not _______ the soldiers to unnecessary danger. A.express B.explode C.ecploit D.expose 32.This newspaper often _______ the government’s opinion, not the public opinion A.affects B.reacts C.reflects D.recognizes 33.Although in GREat danger, the wounded still did not want to _______ from the front. A.feedback B.backward C.withdraw D.departure 34.This movie has a _______ ending. You can not imagine who will be killed finally. A.dramatic B.original C.considerable D.temple 35.During the graduation _______, the president gave a wonderful opening speech. A.evolution B.sign C.individual D.ceremony 36.The dog _______ the rabbit but could not catch it. A.ceased B.chained C.checked D.chased 37.If your letter is over weight, you must pay for the _______. A.excess B.exceed C.checked D.chased 38.In the class the teacher asked the students to _______ their bad habits. A.weaken B.omit C.overcome D.overtake 39.When you study in the United States, usually you have to buy your own health _______. A.insurance B.expense C.evidence D.payment 40.Chocolate and ice-cream have different _______. A.favour B.favourites C.fever D.flavours 41.This is an _______ that will not be easily forgotten. A.impact B.academic C.insult D.alternative 42.Please _______ me for my rudeness. I really do not know the custom here. A. engage B.comfort C.execute D.forgive 43.Water and air are _______ to human beings. We can not live without them. A.harbour B.function C.definite D.essential 44.When the airplane takes off, the passengers are told to _______ their seat belts.