问题补充:
The doctor did what he could the dying man.
A. save
B. to save
C. saved
D. saving
答案:
A. save
(答案→)B. to save
C. saved
D. saving
解析:本句的意思是“医生尽自己所能做的去挽救那个快要死的人的生命”。句子可以简化为:The doctor did sth.(=what he could) the dying man。所以:to save 不定式做目的状语,所以答案为B