选择B
可根据these days看出不能用过去式
其次复合句前半句是现在时态 要保持时态一致后面不能用过去式
I think it is the coldest winter that I ___these days.A.knew B.have known 要解析
I think it is the coldest winter that I ___these days.A.knew B.have known 要解析
英语人气：817 ℃时间：2020-05-24 06:51:49
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