It was not until dark ______ he found that it was the correct way to solve the p

题型：不详难度：来源：

It was not until dark ______ he found that it was the correct way to solve the problem.

A．that

B．what

C．which

D．when

答案

A

解析

试题分析：这是强调句型其结构是It was+被强调部分+ that+其他，判断强调句型的方法是把It was that去掉整个句子不缺成分，是成立的。当被被强调部分是until+状语时，应把句中的not与until+状语一起放在被强调部分。故选A。
点评：本题难度适中。强调句型是高中阶段的重难点之一，也是高考的热点，需要考生有分析理解句子的结构的能力。尤其把强调句型与其他从句混合在一起考查更增加了试题的难度。
即学即练：It was on March 1 _____ I had my hair cut.
A. that             B. what             C. which            D. when
解析：A。句意：我在三月理了发。