19、 In the office, we are required to sit still, keep our eyes on our own work，      to anyone.  

       A. instead of speaking                      B. rather than speak

       C. but would not speak                     D. and not to speak

19、D

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 In the office, we are required to sit still, keep our eyes on our own work，      to anyone.  

       A. instead of speaking                      B. rather than speak

       C. but would not speak                     D. and not to speak

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