问题补充：
The little girl is seriously ill. Luckily we have decided to do it takes to help.
A. whichever
B. whatever
C. whenever
D. however
答案：
A. whichever
(答案→)B. whatever
C. whenever
D. however
解析：考察宾语从句。Whatever引导宾语从句Whatever it takes to help，并作为take的宾语。CD是副词，不能在句中作宾语。A是指特定范围之内的某一个。
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