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        1. ---How old ________ you?
          ---I ______ ten years old.
          A.a(chǎn)re; amB.a(chǎn)re; isC.is; amD.is; are
          A

          試題分析:how old是用來詢問年齡,此句的主語是you,故謂語動詞be要用are。而答語中,句子的主語是I是第一人稱單數(shù)故用am。故此題的答案選A。
          點評:be動詞意思和用法很多,一般的意思是:是,此種用法,有多種變化形式,is,am,are,was,were,being,been,to be.另外,be動詞還有成為的意思。根據(jù)句子中不同的人稱、數(shù)和時態(tài),應(yīng)該選擇相應(yīng)的be動詞。
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