We worked hard and completed the task ________.
A. in the time B. on the time C. ahead of time D. before time
出自:统考 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