-- How long do you think it will be ____ the USA recovers from the losses of the financial crisis? -- Perhaps four or five years.
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when
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since
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that
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before
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—Mum, I've finished my work.—Good, and ________ you choose to play on your PSP or listen to music on your iPod, you mustn't disturb me.
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whichever
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whether
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whatever
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no matter
— The pop group S.H.E is said to have been invited to 2013 CCTV Spring Festival Show.— Really? It’s a long time _______ they three performed together on the mainland.
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since
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that
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when
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before
At long last the child was found on top of _____ we call the museum of science and technology.
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which
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that
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what
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where