—Do you know the mission of the volunteers?—No. But I think they will end up doing there

—Do you know the mission of the volunteers?
—No. But I think they will end up doing there will promote public awareness of environmental protection.
A. that
B. no matter what
C. whatever
D. whether

A. thatB. no matter what(答案→)C. whateverD. whether解析：考查主语从句。Whatever引导主语从句，并在句中做doing的宾语。AC两项不能做doing的宾语；no matter what不能引导主语从句。句意：我认为我们最后做的任何事情都会提高人们的环境保护意识。故C正确。

这个答案应该是对的

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