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        1. Look! Jack and his monkey _________ flying disk together in the garden.
          A.is playingB.was playingC.a(chǎn)re playingD.were playing
          C
          動詞時態(tài)。祈使句look 提示下文用動詞的現(xiàn)在進行時態(tài),主語為復(fù)數(shù)形式,助動詞用are。故選C。
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