Once ______ , the information superhighway will drastically change the lifestyle

游客2023-11-19 34

问题 Once ______ , the information superhighway will drastically change the lifestyle of all the residents on this island.

选项 A、it being completed
B、it completed
C、completed
D、it completes

答案 C

解析连词的用法。once在这里是连词，意为“一旦…就…”，后面省略了it is。

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