What browser are you using?

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Which one of the two brothers did you see?

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Which do you prefer, dogs or cats?

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Which Buddhist school of thought do they belong to?

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Which one of these people is your friend?

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We find it difficult to decide which one to buy.

We're finding it difficult deciding on which one to buy.

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What's your favorite web browser?

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What's your favorite tongue twister?

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Which one do you prefer?

Which one do you like better?

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Which is more important, economic development or environmental protection?

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