Question

【题目】______, the conference began.

A. The candidates having taken their seats

B. The candidates had taken their seats

C. Taken their seats

D. Taking their seats

Answer 1

【答案】 A

【解析】

试题分析：考查独立主格做状语。主语conference不可能执行take the seat 这一动作，必须加The candidates 做逻辑主语。故选A。