The doctors in ORBIS have done ______ an
题型：选择题
问题：
The doctors in ORBIS have done ______ an important job ______ the patients are all grateful to them.
A．too, to
B．so, that
C．such, that
D．as, as
The doctors in ORBIS have done ______ an important job ______ the patients are all grateful to them.
A．too, to
B．so, that
C．such, that
D．as, as