Once ______ , the information superhighway will drastically change the lifestyle

游客2024-10-24  7

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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