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    ---Tim, what are you looking at ? ---Sorry , Mr. Smith. I out at a bird outside the window. A. looked B. am looking C. have been looking D. was looking 【查看更多】

     

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    ---Tim, what are you looking at ?

    　 ---Sorry , Mr. Smith. I ___ out at a bird outside the window.

    A. looked 　　　 　B. am looking　 C. have been looking　 D. was looking

     

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