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
出自:专升本英语

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块