The World Health Organization warned that Asian countries __________ attentive t

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The World Health Organization warned that Asian countries __________ attentive to bird flu since Asia ___________ got rid of the disease completely.

A．should keep; has

B．must remain; has not

C．ought to stay; has been

D．shall be; has not been

答案

解析

略

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 recognize

B．could hardly recognize

C．haven’t recognized

D．wasn’t recognizing

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---But for your timely warning, we __________ into great trouble.
---Well, you know we’re friends.

A．would get

B．must have got

C．would have got

D．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 gained

B．can have gained

C．could have gained

D．must gain

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Don’t push me! __________ you know the truth right away?

A．Must

B．Could

C．Might

D．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 told

B．shouldn’t have told

C．needn’t have told

D．must have told

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