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________ the project in time, the staff were working at weekends.

A. Completing  B. Having completed

C. To have completed  D. To complete

_________ the project in time, the staff were working at weekends.

    A. Completing     B. Having completed    C. To have completed    D. To complete

____________ the project in time, the staff were working at weekends.

A. Completing                                           B. Having completed

C. To have completed                                D. To complete

____________ the project in time, the staff were working at weekends.

A. Completing                                           B. Having completed

C. To have completed                                D. To complete

________ the project in time, the staff were working at weekends.

A．Completing 

B．Having completed

C．To have completed 

D．To complete

________ the project in time, the staff were working at weekends.

　 A. Completing　　 B. Having completed　 C. To have completed　 D. To complete

     the project in time，the staff were working at weekends．

A．Completing             B．Having completed

C．To have completed       D．To complete