----- Nội dung dịch tự động từ ảnh ----- 4. Most VietNamese return home for Tet běcause it is the most important festival in Viet nam. (so) -> 5. It's not necessary to book a hotel In advance. (have to) →You. 6. In my family, all of the children are obliged to get up before 6 a.m. and do exercises. (have to) -> In my family,
