问题
选择题
Not until I began to work ________ how much tim
e I had wasted.[ ]
A. did I realize
B. didn't I realize
C. hadn't I realized
D. had I realized
答案
答案：A
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Not until I began to work ________ how much time I had wasted.[ ]
A. did I realize
B. didn't I realize
C. hadn't I realized
D. had I realized
答案：A