单选题
Not until I began to work ______ how much time I had wasted.
A.have I realized B.I have realized C.did I realize D.I realized
A
B
C
D
【正确答案】
C
【答案解析】
[解析] 本题测试的是倒装句的用法。Not until引导的从句置于句首,主句中谓语需要部分倒装,即谓语动词的助动词提到主语前面。故选C。
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