Tìm lỗi sai và sửa 2. It is essential of people to keep family customs and traditions. D A B C 3. I want you to cook many delicious dishes to congratulate her about her promotion. A B C D 4. You should avoid to use mobile phone too much because it can harm your health. A B C D 5. I often give clothes or jewelries for my parents on Christmas Day. A B C D