2. 外语
  3. Once ______, this power station will supply all the neighboring towns and villages with electricity.

Once ______, this power station will supply all the neighboring towns and villages with electricity.

admin2013-11-10  31
问题 Once ______, this power station will supply all the neighboring towns and villages with electricity.
选项 A、it being completed
B、it completed
C、completed
D、it completes
答案C
解析 本题考核-ed分词表被动的用法。once在这里是连词，意为“一旦……就……”，其后可以省略主谓it is，直接加-ed分词。
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