问题
选择题
From his ____ voice on the phone, I know everything is going under way.
A．satisfactory
B．satisfying
C．satisfied
D．satisfaction
答案
C
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。