Find the grammar reference that you need. Learn the key grammar rules, read the examples, understand how to use them in a conversation.
Upper Intermediate: CEFR B2, Cambridge English Scale 160 - 179, TOEIC (R&L) Total: 785 - 940, TOEFL iBT: 87 – 109, IELTS: 5.5 – 6.5
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