Nelson Mandela former president of South Africa devoted himself to making the black and

问题补充：

Nelson Mandela, former president of South Africa, devoted himself to making the black and white equal.

A. actually

B. gradually

C. entirely

D. sincerely

答案：

A. actually

B. gradually

(答案→)C. entirely

D. sincerely

解析：A. actually实际上，B. gradually逐渐的，C. entirely完全地，D. sincerely真诚地，句意：尼尔森麦当劳，南非的前总统，完全献身于使黑人和白人平等。选C。