----- Nội dung ảnh ----- 1. What your Christmas tree? 2. harder/ you may/ fail the exam/ or/ You have to study/ 3. prepare offerings/ The Vietnamese/ during Tet/ often holiday/ 4. and lose/ If teenagers play/ online games/ will get/ their concentration/ too much/ they/ tired/ 5. helps/ with the housework/ Ann is/ however,/ she/ her mother/ very tired/ 6. private information/ If teenagers put/ on social media networks/ use the information/ because people may/ it could be/ dangerous/ for bad purposes/