when I got there,the meeting _____for ten minutes A.had begun B.has begun C.had been on D.had o为什么答案选C

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whenIgotthere,themeeting_____fortenminutesA.hadbegunB.hasbegunC.hadbeenonD.hado为什么答案选CwhenIgotthere,

when I got there,the meeting _____for ten minutes A.had begun B.has begun C.had been on D.had o为什么答案选C
when I got there,the meeting _____for ten minutes A.had begun B.has begun C.had been on D.had o
为什么答案选C

when I got there,the meeting _____for ten minutes A.had begun B.has begun C.had been on D.had o为什么答案选C
begin不是持续性动作,只能说 begun ten minutes ago,不能用for的时间状语
for 时间状语表示持续性
所以用C had been on 表示会开了10分钟