Upon reading the notice all the staff of the pany stood there , looking at each other. A. no speakingB. speechlesslyC. speechless;D. did not speaking
网友回答
speechlessly(adv)不是修饰动词stood 的,而是 speechless(adj)用来修饰主语all the staff of the pany,即形容词做主补,所以选 C。