因为句子中有明显表明时间的词语by
一般看到by the time就两种时态：过去完成时和将来完成时
by the time后面为一般现在时,说明事情还未发生,所以用将来完成时
也就是A
The work （）down by the time you get here
The work （）down by the time you get here
A：will have been down B：is down C：had been downD：would have down 选什么 为什么啊
A：will have been down B：is down C：had been downD：would have down 选什么 为什么啊
英语人气：483 ℃时间：2019-10-08 17:14:02
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