Question

Perseverance is a kind of quality --- and that’s ________ it takes to do anything well.

A．why

B．that

C．which

D．what

Answer 1

D

试题分析：考查表语从句：句意：坚持是一种品质，这是把事情做好必须的。Is后面是表语从句，take后面是缺少宾语，用what引导表语从句。选D。
点评：连接表语从句的连接词有：that, what, who, when, where, which, why, whether, how, whoever，whomever，whichever ，whatever等。还有如because, as if, as though等。解答这类题目，关键在于分析清楚句子结构。通过判断引导词在从句中所作的成分及意义，来选择正确的引导词。