All of us were at the news.A. frustrating frustratingB. frustrating frustratedC. frust

问题补充：

All of us were at the news.

A. frustrating, frustrating

B. frustrating, frustrated

C. frustrated, frustrating

D. frustrated, frustrated

答案：

A. frustrating, frustrating

B. frustrating, frustrated

(答案→)C. frustrated, frustrating

D. frustrated, frustrated

解析：考查形容词。frustrating令人沮丧的； frustrated（感到）沮丧的。句意：听到令人沮丧的消息，我们所有的人都感到沮丧。