From his voice on the phone I know everything is going under way.A. satisfactoryB. satisf

问题补充：

From his voice on the phone I know everything is going under way.

A. satisfactory

B. satisfying

C. satisfied

D. satisfaction

答案：

A. satisfactory

B. satisfying

(答案→)C. satisfied

D. satisfaction

解析：\声音voice能体现人的情感。satisfied意为“感到满意”，符合题意。satisfying意为“令人感到满意”，多说明某物或某事。