Question

Was it not until you began to work ________ how much time youhad wasted?

A. did you realize
B. that you realized
C. did you not realize
D. that you didn’t realize

Answer 1

答案B
分析句子结构可知，该题为It was not until的强调句型，故应选由that连接陈述结构，由于not前置，故陈述结构中必须使用肯定结构形式。