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    I don’t know to do. A. how B. where C. when D. what 【查看更多】

     

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    —I don’t know _______to do next?

      --It’s easy .Press the red button in 2 minutes.

    A.what          B.how               C.where         D.when

     

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    I don't know _____ to do with it. Will you please show me how?
    [     ]
    A. where
    B. when
    C. how
    D. what?

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    I really don’t know_________.

    A. when to do                    B. how to do               C. what to do            D. where to do

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    My best friend Zhao Min always tells lies (谎言 ) to me.  I don't know _____ to do.
    [     ]
    A. how          
    B. what          
    C. where          
    D. when

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    She looks very sad. I want to help her , but I just don’t know_________ to do.

     A. what     B. when   C. how      D. where

     

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