Of all my friends will be able to persuade Tom to change his mind. He is so firm upon it.A

问题补充：

Of all my friends will be able to persuade Tom to change his mind. He is so firm upon it.

A. some

B. anyone

C. none

D. neither

答案：

A. some

B. anyone

(答案→)C. none

D. neither

解析：从下文He is so firm upon it可知“所有朋友中没有人能说服汤姆改变主意”。