She can speak German and Greek ,to ______ nothing of English.

A．we should have a better understanding of the world
B．we should live an optimistic rather than pessimistic life
C．we can achieve learning by exploring subjects in this world
D．we can lead a meaningful life from the pleasure of learning

A．our learning may grow lively and active
B．our emotions may not change accordingly
C．our mind and spirit can continue to develop
D．our mind can be expanded with work and play