Was it not until you began to work how much time you had wasted?A. did you realizeB. that

问题补充：

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

A. did you realize

B. that you realized

C. did you not realize

D. that you didn’t realize

答案：

A. did you realize

(答案→)B. that you realized

C. did you not realize

D. that you didn’t realize

解析：考查特殊的强调句：it was not until..that…直到才，句意：直到你开始工作你才意识到浪费了多少时间吗？选B。