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Not until I began to work how much time I had wasted. A. didn’t I realize B. I d

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Not until I began to work how much time I had wasted. A. didn’t I realize B. I d

 Not until I began to work ______ how much time I had wasted.

A. didn’t I realize                              B. I didn’t realize

C. I realized                                      D. did I realize

试题答案

D