Challenge to Knocker
You give a topic, we go ahead, to see who do it with the less time and more efficiency.
2005-11-27 11:52
2005-11-27 12:04
2005-11-27 12:28
PS:我也没过四级,现在是时候练了。
2005-11-27 12:30
2005-11-27 12:32

2005-11-27 12:38
我试试。
2005-11-27 12:52