`1.` It is known as Tet Nguyen Dan, or Tet.

`-` Dẫn chứng: It is especially known as Tst Nigycs Den, or Tet

`2.` Yes, it is.

`-` Dẫn chứng: Vietnam's New Year is celebrated according to the Lunar calendar.

`3.` It begins between January twenty-first and February nineteen.

`-` Dẫn chứng: It begins between January twenty-first and February nineteen.

`4.` Vietnamese people usually make preparations for the holiday several weeks beforehand.

`-` Dẫn chứng: The exact dame changes from year to year. Vietnamese people usually make preparations for the holiday several weeks beforehand.

`5.` Yes, they do.

`-` Dẫn chứng: On the New Year's Eve, people sit up to madoghs to see New Year in, then they put on new clothes and give one another the greetings of the season.

`1.` Vietnam's New Year known as Tet Nguyen Dan.

`-` Dẫn chứng : It is especially known as Tet Nguyen Dan, of Tet.

`2.` Yes, it is.

`-` Dẫn chứng : Vietnam's New Year is celebrated according to the Lunar calendar.

`3.` It begins between January twenty`-`first and February nineteen.

`-` Dẫn chứng : It begins between January twenty`-`first and February nineteen.

`4.` Vietnamese people usually tidy theirs houses, cook special food, clean and make offerings on the family altars.

`-` Dẫn chứng : They tidy theirs houses, cook special food, clean and make offerings on the family altars.

`5.` Yes, they do.

`-` Dẫn chứng : On the New Year's Eve, people sit up to midnight to see New Year in, ...