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V/
1. It is official known as Tet Nguyen Dan.
2. Yes, it is.
3. They tidy their houses, cook special food, clean and make offerings on the family altars.
4. Yes, they do.
C/
VI/
1. He has flu. He keeps sneezing and coughing.
2. Listening to music in free time is my favourite hobby.
3. My brother enjoyed playing the piano when he was young.
4. In the future, I will travel around Viet Nam.
VII/
1. Th flat is not as big as the house.
2. Tickets are sold at the gate of the tourist site.
3. Nga is interested in going shopping on SUnday with her sister.
4. My school is different from my sister's school.