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23.By the end of last month, our factory(produce) 13 000 motors. (分数:2.00) 填空项 1:___ (正确答案:正确答案:had produced) 解析:解析:本题考查过去完成时。由句首的时间状语可知,句子应用过去完成时,表示到过去某个时间 为止已经发生或完成的动作,故空格处应填 had produced。 24.The teacher...
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