You should be able to discuss how this universal theme is important to the play.

Olivia, at various times, seems to be caught between duty and desire. She says to Viola/Cesario, The   upbraids me with the   of time. (III.1.115)

Ask yourself: Do you think this is a specific comment about the duties Olivia has as mistress of the house, or is she making a deeper comment about time?