题目内容
句型转换:根据前面所给的句子完成后面的句子,使其意思不变,每空一词
It is yet not known how these were conveyed over a distance of 380 kilometers.
People ________ ________ ________ how these were conveyed over a distance of 380 kilometers.
答案:
解析:
解析:
still, don't, know |
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