James has just arrived, but I didn’’t know he_______until yesterday.

A．because one only gets one pair of eyes; delay in treatment or inadequate treatment may cause permanent eye damage
B．because the eyes are the windows to me soul
C．because adults need to wash out their eyes in a shower periodically
D．because only physicians can treat eye bums

A．can’’t
B．don’’t
C．wouldn’’t
D．won’’t