Some of the middle-aged people ____ to the meeting were famous professors. A. were invited B. who invited C. inviting D. invited
出自:西安交通大学--英语三

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