Indoor heating systems have made __ _____ for people to live and work comfortably ia mild climate. make it possible for sb. to do sth.
·possible
·it possible
·possible that
·it is possible
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