单选题 Because of Mr. Doyle's busy schedule today, his meeting with the personnel director about organizing employee interviews was______.

【正确答案】 C

【答案解析】解析：根据上下文语义，此处表示“由于日程紧张，会议取消”，与空格前be动词was构成被动语态的应为动词cancel的过去分词形式(C)canceled。(A)released意为“发布”，(B)isolated意为“隔离”，(D)expired意为“到期，终止”。