The doctors have done they could the child.
A. whatever; to save
B. everything ; save
C. all what; to save
D. all which; save
网友回答
(答案→)A. whatever; to save
B. everything ; save
C. all what; to save
D. all which; save
解析：考查名词性从句。句意“那些医生已经尽最大努力来拯救那个小孩。”all that相当于what，排除C；all作先行词时，定语从句引导词用that，排除D；do sth. to do sth.用不定式表示目的，排除B。故选A。