how long _____ the movie ____ since it began?only ten minutes A has,lasted为什么选A
问题描述：
how long _____ the movie ____ since it began?only ten minutes A has,lasted为什么选A
答
因为since接完成时态
答
since + 一段时间 是现在完成时的时间状语。
答
since 从,起.用作时间状语.要求句子用现在完成时.表示从过去到现在的结果.如
I have known him since I lived here.
I have made many friends since I came here.