【题目】Last Friday the teachers and students in No 1 Senior High held a grand ceremony in (庆祝) of the opening ceremony of the Art Festival in our school.
在线课程【答案】celebration
【解析】 句意：上星期五，第一高级中学的老师和学生举行了一个盛大的仪式，庆祝学校艺术节的开幕。 in celebration of 固定词组，”为了庆祝......“，故填celebration。