Itcouldtake46monthsbeforethefi

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It could take 4-6 months before the first batch（批）of vaccines （疫苗）are available to fight A/H1N1 flu ________ as swine flu, WHO officials said.

A．known

B．to know

C．knowing

D．having known

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Please remain ______; the winner of the prize will be announced soon.

A．seating

B．seated

C．to seat

D．to be seated

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You ___ go there to meet him if you want to, but you____! He’ll come here soon.

A．may； mustn’t	B．have to； needn’t
C．can； needn’t	D．can； mustn’t

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—I’m sorry I broke your mirror.
—Oh, really? ______.

A．It’s OK with me	B．It doesn’t matter
C．Don’t be sorry	D．I don’t care

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He borrowed $100 from his boss and was given ten months to ______ the debt.

A．give back

B．bring back

C．pay for

D．pay off

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The old man _____ chess but now he doesn’t enjoy it.

A．used to play	B．used to playing
C．was used to play	D．was used to playing

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