正确答案为：
C when China became a member of the WTO
他问我中国是什么时候加入世贸组织的.
A 选项 从句应该用过去将来时态 who would kick the first goal in the World Cup
B 选项 从句应该用陈诉语序 when the APEC meeting was held.
D 选项 从句应该用过去将来时态 where the 2008 Olympics would be held太感谢你了，就你了不客气，满意请采纳一下。