Regulations require needs special diets the cooking manager in advance.
A. who; informs
B. whom; informed
C. whomever; inform
D. whoever; inform
网友回答
A. who; informs
B. whom; informed
C. whomever; inform
(答案→)D. whoever; inform
解析：考查名词性从句和虚拟语气。require后跟宾语从句，从句缺少主语，排除B、C；这里强调“任何人”，排除A；regulations规定，后面的从句用“should+动词原形”，should可省略，故选D。