D. separated I... Ile passage and answer the questions below. ( Đọc và trả lời các câu hỏi bên dưới) (1m) Vietnamese's New Year is celebrated according to the Lunar calendar. It is official known as Tet Nguyen Dan or Tet. It begins between January twenty-first and February nineteen. The exact day changes from year to year. Vietnamese people usually make preparations for the holiday several weeks beforehand. They tidy their houses, cook the special food, clean and make offerings on the family altars. On the New Year's Eve, people sit up to midnight to see the New Year in, then they put on new clothes and give one another the greetings of season. Tet lasts ten days. The first three days are the most important. Vietnamese people believe that how people act during those days will influence the whole year. As a result, they make every effort to avoid arguments and smile as much as possible. 21. When does the Lunar New Year begin? 22. What do Vietnamese people usually do to prepare for Tet? 23. What do people do on the New Year's Eve? 24. How long does Tet last?