单选题 If I may be so ______ as to advise you, my opinion is that you should not reply to his letter.

【正确答案】 D
【答案解析】[解析] 本题空格处是说如果我可以大胆地向你建议。D项“bold大胆的,冒失的”符合题意。其他三项“generous慷慨的,大方的;humble卑微的,谦逊的;proud得意的”都不正确。