1. C (Young people are usually more willing to talk if they believe that questions are asked out of real interest and not because people are trying to check up on them.)
2. A (Young people are usually more willing to talk if they believe that questions are asked out of real interest and not because people are trying to check up on them.)
3. D (some young people in trying to be adult may experiment with alcohol or smoking.)
4. B (manner: thái độ, cử chỉ, cách cư xử đồng nghĩa với behaviour: cách cư xử, cách ăn ở)
