A-A+
Not until I began to work __ how much time I h
问题详情
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
参考答案
正确答案：B
在具有否定意义的词起始的句子中，主句中的主语和谓语要倒装。倒装时，助动词移至主语前面，实意动词仍在主语之后。
