【B13】A．whileB．whichC．wheneverD．when

【C11】A．thatB．whichC．ifD．when

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The only candidate______ can hope to defeat him finally quits.A．whoB．whichC．thatD．when

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【C19】A．asB．whichC．thatD．when

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The street garden is located in______used to be a market place.A．whereB．whichC．whatD．when

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Do what you think is right,______they say.A．whateverB．whicheverC．wheneverD．however

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It was not until 1920 ______ regular broadcast began.A、whileB、whichC、thatD、since

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【C3】A．whileB．whichC．forD．where

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