May I speak to your manager at four o’clock this afternoon?--I’m sorry. He to a confer

--May I speak to your manager at four o’clock this afternoon?
--I’m sorry. He to a conference long before then.
A. will have gone
B. had gone
C. would go
D. has gone

(答案→)A. will have goneB. had goneC. would goD. has gone解析： 考察时态。本题的关键词是long before then，之中的then是一个将来的时间at five o’clock this afternoon。这个时间状语表示的是在将来一个时间之前就完成的动作，故使用将来完成时的时态。句义：—在今天下午5点之前我可以和你们的经理聊聊吗？—对不起，在那之前很久他就已经去参加一个会议了。故A正确。

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