Several large musical panies are reported with major online music providers in China at present about charging individual users for music downloads.
A. discussing
B. to discuss
C. having discussed
D. to be discussing
网友回答
A. discussing
B. to discuss
C. having discussed
(答案→)D. to be discussing
解析：D 考查非谓语。“据报道，某人做某事”应用句型sb.is reported to do sth.句意：据报道，目前几家大的音乐公司正与国内主要在线音乐提供商商讨建立用户下载音乐收费的问题。根据句意，应用to do不定式的进行时表示动作正在进行。