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This is the book()I have learned a lot.A. to whichB. by whomC. from which
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A.whoB.whomC.whoseD.whoever
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【C16】A.whoB.theyC.thatD.which
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【C5】A.whoB.whatC.whomD.which
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A.whereB.whomC.which
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【C9】A.whichB.whomC.whatD.who
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He has two children,______have become world-famous scientists.A.none of whoB.all of whomC.