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We had an anxious couple of weeks _____ for the results of the experiment.

    A. wait          B. to be waiting      C. waited       D. waiting

We had an anxious couple of weeks _____ for the results of the experiment.

A. wait            B. to be waiting    C. waited      D. waiting

 We had an anxious couple of weeks _____ for the results of the experiment.

   A. wait            B. to be waiting    C. waited      D. waiting

 We had an anxious couple of weeks _____ for the results of the experiment.

A. wait               B. to be waiting     C. waited            D. waiting

We had an anxious couple of weeks ______ for the results of the experiment.   

       A. wait                 B. to be waiting    C. waited               D. waiting

We had an anxious couple of weeks ________ for the results of the experiment.

A. wait            B. to be waiting     C. waited             D. waiting

We had an anxious couple of weeks ______ for the results of the experiment.   

       A. wait                 B. to be waiting    C. waited               D. waiting

We had an anxious couple of weeks _____ for the results of the experiment.

 We had an anxious couple of weeks, ____ for the results of the experiment.

    A. wait                  B. to be waiting      C. waited               D. waiting

We had an anxious couple of weeks, _______ for the results of the experiment.

A．wait              B．to be waiting       C．waited            D．waiting