How should I approach them? ​ — 5 / 15, pages 12 - 15. How deadly has smoking been? During the last century, it has killed 100,000,000 people.
Хэзээ, яаж дэлгэрүүлэх ёстой билээ? ​ — 5 / 15, хуудас 12 - ​ 15.