单选题 What he told me to do was ______ I should get fully prepared before the interview.
【正确答案】 D
【答案解析】[解析] 本题考查表语从句的关联词。表语从句位于系动词后,起到解释说明的作用,基本结构为:主语+系动词+that从句。在本句中,“what he told me to do”为主语,故答案为D。