单选题 I shall never forget the look of intense anguish on the face of his parents when they heard the news.
【正确答案】 C
【答案解析】[解析] anguish“痛苦”，四个选项：stress“压力”；dilemma“困境”；misery“痛苦，不幸”；surprise“惊奇”；所以C项符合题意。