第1个回答 2009-04-12
why did it happen?
how did we come to this?
why did this situation occur?楼上的语法有毛病。本回答被提问者采纳
第2个回答 2009-04-12
why did it happen?
第3个回答 2009-04-12
What is the reason for such an occurrence?
第4个回答 2009-04-12
Why this situation is occurred?
第5个回答 2009-04-12
how did this happen?