Image credit: Kate Mangostar via FreepikUse these G.B.C. mock tests to prepare for your G.B.C. assessment. Pay attention to grammar, argumentation, fluency and delivery. Don't forget to avoid saying non-word sounds like “um” and “ah” G.B.C. GBC Mock Test ‹ G.B.C. モックテスト 2 上 G.B.C. モックテスト 4 ›