Read the passage, and choose the correct answer A, B, C or D for each question:

In Viet Nam, there is great excitement built up well before Tet Nguyen Dan. First, every family organizes a trip to the cemetery to visit the graves of their ancestor. After that, to create an air of prosperity, wealth and fun for the first three days of the Lunar New Year, people are kept busy cooking traditional foods, buying gifts, and making other preparations. Certain items deemed to be bought or made are banh chung, dried watermelon seeds, tea, dried sausages, fruit (fresh and candied), ornamental plants and flowers. Red and yellow flowers are ideal as they make the house more welcoming.

On the New Year’s days, only good comments and wishes can be expressed. Children receive their li xi (or red envelopes with lucky money inside). People make a visit to family members, neighbors, and close friends. And people who live apart from their family try to get together on these days. Clearly enough, games and various forms of entertainment are staged and these often last a week. Varying traditional specialties including wrestling, buffalo fighting, dragon or unicorn dancing take place in different regions.

Before Tet, people usually _________.