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 use the very best of your English. G.B.C. GBC Mock Test ‹ G.B.C. モックテスト 9 上 G.B.C. テスト戦略 ›