We are trying to do _____ it takes to sa
题型：选择题
问题：
We are trying to do _____ it takes to save those injured in the accident. [ ]
A. whichever
B. however
C. whatever
D. whoever
We are trying to do _____ it takes to save those injured in the accident. [ ]
A. whichever
B. however
C. whatever
D. whoever