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 respond to the question immediately. G.B.C. GBC Mock Test ‹ G.B.C. モックテスト 4 上 G.B.C. モックテスト 6 ›