You have very good teaching skills! Thanks again.

来源: EnLearner 于 2012-05-29 20:23:54 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (0 bytes)

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• you are very welcome. good night! -tingfeng- ♀ 给 tingfeng 发送悄悄话 (0 bytes) () 05/29/2012 postreply 20:42:25

• Good night, Professor! -EnLearner- ♂ 给 EnLearner 发送悄悄话 EnLearner 的博客首页 (0 bytes) () 05/29/2012 postreply 20:55:52

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