练习册

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    If carefully, the experiment will be successful. A. do B. does C. done D. doing答案选C.可视为if it is carefully done之省略. 【查看更多】

     

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    If       carefully, the experiment will be successful.

           A．do                      B．does                    C．done                   D．doing

     

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    If       carefully, the experiment will be successful.

           A．do     B．does  C．done  D．doing

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     If       carefully, the experiment will be successful.

           A．do                      B．does                    C．done                   D．doing

     

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    If _____ carefully, the experiment will be successful.?

    A. do　 B. does　 C. done　 D. doing

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     If         carefully, the experiment will be successful．

           A．do                      B．does                   C．done                  D．doing

     

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