第1个回答 2013-12-11
How many big events have taken place in China?
第2个回答 2013-12-11
How many events happened in China.
第3个回答 2013-12-11
追答楼上错了
第4个回答 2013-12-11
How many important events have taken place in China?
第5个回答 2013-12-11
China has undergone many big events?
追答楼上的都错了
