()I was out of towat the time, so I don’t know exactly how it _______
· was happening
·happened
·happens
·has happened
出自:佳木斯大学语言治疗学

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