Question

— When did the meeting begin?—At four o’clock．It ______ for 15 minutes． A．was on B．be.

— When did the meeting begin?—At four o’clock．It ______ for 15 minutes． A．was on B．began C．has been on D．has begun

Answer 1

C

试题分析：句意：会议什么时间开始的？四点钟，已经开始了15分钟了。后面的时间状语为for加一段时间，所以常用于现在完成时中，且谓语动词要用延续性动词；故选C。