Eugene's never willing to alter any of his opinions. It’s no use with him.A. to argueB. a

问题补充：

Eugenes never willing to alter any of his opinions. It’s no use with him.

A. to argue

B. arguing

C. argued

D. having argued

答案：

A. to argue

(答案→)B. arguing

C. argued

D. having argued

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