Don.t forget _________ the window before leaving the room.
A. to have closed B. to close C. having closed D. closing
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