[D29] She is very dear to us.We have been prepared to do ______ it takes to save her life.

问题描述:

[D29] She is very dear to us.We have been prepared to do ______ it takes to save her life.
A.whichever B.however C.whatever D.whoever
请翻译,并分析.

她非常爱我们,我们已经准备好尽我们一切所能拯救她的生命
whatever 引导宾语从句,作双重成分,分别作do和take的宾语