All students are requested to be present at the meeting in the school auditorium at 1:30

问题补充：

All students are requested to be present at the meeting in the school auditorium at 1:30 pm.

A. being held

B. having held

Cto be held

D. to hold

答案：

A. being held

B. having held

(答案→)C. to be held

D. to hold

解析：考查非谓语动词。句意：所有的学生们被要求出席在学校观众席下午一点半举行的会议。所以选C。