The elderly mother sits in the armchair at the family picture on the wall quietly.A. stari

问题补充：

The elderly mother sits in the armchair,at the family picture on the wall quietly.

A. staring

B. being stared

C. stared

D. to stare

答案：

(答案→)A. staring

B. being stared

C. stared

D. to stare

解析：考察分词作状语。本句指的动词短语stare at与句子主语the elderly mother构成主动关系，使用现在分词在句中作状语。句意：老妈们坐在椅子上，安静地盯着墙上的全家福看。故A正确。