问题补充：
The doctors did all they could him .
A. to bring; back to life
B. bring; back to life
C. bring; to life
D. to bring; to living
答案：
(答案→)A. to bring; back to life
B. bring; back to life
C. bring; to life
D. to bring; to living
解析：句型：do all sb can to do sth 尽某人所能做某事，短语：bring back to life 使恢复生机，句意：医生们尽他们所能使他恢复生命。所以选A。
