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题目
题型:不详难度:来源:
The World Health Organization warned that Asian countries __________ attentive to bird flu since Asia ___________ got rid of the disease completely.
A.should keep; hasB.must remain; has notC.ought to stay; has beenD.shall be; has not been

答案
B
解析

核心考点
试题【The World Health Organization warned that Asian countries __________ attentive t】;主要考察你对虚拟语气等知识点的理解。[详细]
举一反三
— Oh, it’s you. I__________ you. Why are you looking so thin and pale?
— I’ve been ill for weeks and still under treatment.
A.can’t recognizeB.could hardly recognizeC.haven’t recognizedD.wasn’t recognizing

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---But for your timely warning, we __________ into great trouble.
---Well, you know we’re friends.
A.would getB.must have gotC.would have gotD.can’t have got

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. He __________ full marks, but he was so careless as to make a spelling mistake.
A.must have gainedB.can have gainedC.could have gainedD.must gain

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Don’t push me! __________ you know the truth right away?
A.MustB.CouldC.MightD.Would

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——Alice looks sad. Did you tell her about the accident?
——Yes, but I    ______ her just before her final examinations.
A.should have toldB.shouldn’t have toldC.needn’t have toldD.must have told

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