问题
选择题
The doctors have done ______ they could ______the child.
A．whatever; to save
B．everything ; save
C．all what; to save
D．all which; save
答案
答案：A
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。