题目内容
Not until I began to work_________ how much time I had wasted.
A. didn’t I realize B. did I realize
C. I didn’t realize D. I realize
B
“not until+状语从句’放在句首时，从句不倒装，主句用倒装句式。
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It was not until I came here ____ I realized this place was famous, for not only its beauty but also its weather.
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A．who |
B．that |
C．where |
D．before |