----- Nội dung dịch tự động từ ảnh ----- 17. People are busy buying gifts, cleaning and decorating the house and cooking traditional foods to welcome Tet holiday now. A. national B. customary O C. important O D. favourite 18. 1 điểm 18. This is the instance where big, obvious non-verbal signals are appropriate. O A. situation B. attention C. place D. matter
