下周一下午3点全体学生听一个有关美国教育的报告，地点为学校报告厅，主讲人是刚访美归国的李明华教授。内容：美国中学教育。要求每个同学按时参加，不要迟到。
　　There will be a talk on American high school 1.______ at 3:00 p. m. 2.______ 3.______ in the school lecture hall. The talk will be given by Professor Li Minghua. Everyone should attend it 4.______ time. Please don't be 5.______.