Oxford Grammar Secondary School - OGSS, Karachi, Pakistan. 7969 likes · 18 talking about this · 2598 were here. Oxford Grammar Secondary School - OGSS.... ... <看更多>

Oxford Grammar For Schools 1 Listening Unit 1 to Unit 6Intro 00:00Unit 1: 1.1 00:18 1.2 03:53 1.3 05:33 1.4 06:45 1.5 08:20 1.6 10:40Unit 2. ... <看更多>