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 a mystery how the Egyptians were able to build the Pyramids not using modern construction machines.

It is a mystery how the Egyptians were able to build the Pyramids ________ ________ ________ ________ modern construction machines.

答案:
解析:

without, the, use, of


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