核心问题
The Portuguese give a great deal of credit to one man for having promoted sea travel, that man ____ Prince Henry the navigator, who lived in the 15th century.
A. is B. was C. has D. had(《硕士研究生入学考试英语答卷典型错误分析及全真模拟题库》)
书上给的答案是 A(is)，但我认为这个答案是错误的。不知哪个选项是正确的？
词典解答
书上所给的四个选项都是错误的。上道题应填 being。详细的情形,请见 being 。