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 add plenty of natural filler and transition phrases. G.B.C. GBC Mock Test ‹ G.B.C. モックテスト 8 上 G.B.C. モックテスト 10 ›