Upon reading the notice all the staff of the company stood there        ,  looki

题型：不详难度：来源：

Upon reading the notice all the staff of the company stood there        ,  looking     at each other.

A．no speaking

B．speechlessly

C．speechless;

D．did not speaking

答案

C

解析

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 company，即形容词做主补,所以选 C。