I. Mẫu câu cảm ơn - I'm (very/so) grateful for.. - Thank you (very much/ so much) for.. - Thanks a lot/ - Thanks a lot for.. Đáp lại - You're welcome. - It's my pleasure - Don't mention it - Don't worry about it - That's all right. II. Các mẫu câu xin lỗi - Forgive me - I'm...