题目内容
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 |
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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