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A __________ to this problem is expected to be fou
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To say something _______ one thing, to do it _____ another.A、is; isB、are; areC、is; areD
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____ , the repair in so short a time is unknown to us.A.How they finishedB.How did they fi
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It remains unknown whether the rate of cell turnover in diseased hearts____________.
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The ______ of the word is unknown, but it is certainly not from Greek.[2001]A.originB.gene
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_________(60)A.converts B.is to convertC.is conve
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His compass proved___to him when he was lost in an unknown country.