回复：Overall, excellent reading. Your intonation and pacing

来源: 于 2009-04-30 05:25:35 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

again the s and z, I didn't know it is z.I have difficulty defferenciate ei and i too. Thank you for point them out.I will correct them.