E-mail, as well as telephones, ________ an important part in daily communication. ( A)
A. is playing B. have played C. are playing D. play
出自:法学

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