从方框中所给的A、B、C、D、E 五个选项中选出可以填入空白处的最佳选项,完成对话Steve: Good evening,( 1 )Receptionist: OK, I've found it. ( 2 )Steve: That's right.Receptionist: ( 3 )Steve: Yes, sure. And ( 4 ) Receptionist: Certainly sir. ( 5 ) Your room is on the 8th floor, Room 812. Please make sure you check out no later than 12 noon.