We should do as much as we can _____ our country better and more beautiful: [ ]

A. make

B. makes

C. making

D. to make

肺梗死

A．梗死灶呈节段状
B．贫血性梗死灶呈锥体状
C．出血性梗死灶呈锥体状
D．梗死灶呈地图状
E．梗死灶呈液化性坏死