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If Greeks and Turks had not helped each other after the earthquakes five years ago,they____ mortal enemies instead of friendly neighbors later on..
A.would have beenB.might be C.should have beenD.must have been
B
考查错综时间的if非真实条件句,从句是和过去相反,用过去完成时,主句是和将来相反的,用would/might/should do,句意是:如果希腊和土耳其人没有在五年前地震后互相帮助,他们将成为不共戴天的敌人,而不是以后的友好邻邦。选B。
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