单选题 The presentation of this evening's winners will commence ______ at seven following dinner at six.
A. precise B. precision C. precisely D. preciseness

【正确答案】 C
【答案解析】[解析] 本题需选择正确的词形。commence既是及物动词,也是不及物动词。根据主语the presentation和commence的关系,可判断出这里的commence是不及物动词,因此横线处应选择可修饰动词的副词。