In first aid ,every minute should be made full use ___ the injured.

问题描述:

In first aid ,every minute should be made full use ___ the injured.
A.of saving B.to save Cto save D.of to save
为什么选D

固定用法 make full use of充分利用
to save the injured 不定式作目的状语‘ 为了救伤员’
所以D对