语法与词汇 7.As the manager was away on a business trip, I was asked to______the weekly staff meeting.
【正确答案】 C
【答案解析】在给出的选项中：preside意为“主持，担任”；introduce意为“介绍”；chair意为“主持”；dominate意为“统治”。根据句意和各个选项的意思可知，正确答案是C。