Before holding a meeting, the organizer or the relevant contact should make sure whether the meeting room is 1)________ in advance and make the room 2)________.Please keep the room 3)________, take care of the equipments, operate the equipment in a proper way and don't forget to 4)________ the source power when you finish. Please take your file box and personal belongings and close all the 5)________ when the meeting is over. Thanks for your cooperation. A. 1 B. 2 C. 3 D. 4 E. 5