From his voice on the phone, I know everything is going under way.
A. satisfactory
B. satisfying
C. satisfied
D. satisfaction
网友回答
A. satisfactory
B. satisfying
(答案→)C. satisfied
D. satisfaction
解析：考查词性转换。satisfactory=satisfying“令人满意的”，修饰物；satisfied“满意的”，修饰人；satisfaction“满意”，名词。句意“从电话里他的嗓音可以听出来，一切进展顺利。”voice“嗓音”，指人的嗓音，故用satisfied修饰。故选C。