问题
选择题
Willpower is a kind of quality, _____is _____it takes to do anything well.
A．what; which
B．what ;what
C．which; which
D．which; what
答案
答案：D
考查定语从句及名词性从句。which引导非限定性定语从句，what引导表语从句，在从句中作宾语，选D。
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