He didn’t come although we had made an appointment. 
Anh ấy đã không đến, mặc dù chúng tôi đã hẹn trước. * 099 like: He didn’t come although we had made an appointment. → →
He didn’t come although we had made an appointment. Anh ấy đã không đến, mặc dù chúng tôi đã hẹn trước. * 099