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 realized
答案：
解析：
解析：
|
以 not until为首的句子要倒装，即把be, have，助动词和情态动词放在主语之前。 |
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