问题描述：
In 2003 it was ready for the people of St Petersburg when they.
In 2003 it was ready for the people of St Petersburg when they celebrated the 300th birthday of their city.是什么从句?定语?状语?
In 2003 it was ready for the people of St Petersburg when they celebrated the 300th birthday of their city.是什么从句?定语?状语?
问题解答：
我来补答展开全文阅读