Read the passage and mark A, B, C or D to indicate the correct word that best fits each of the questions from 21 to 25.

In the early twentieth century, an American woman named Emily Post wrote a book (21)_______ etiquette. This book explained the proper behavior Americans should follow in many different social situations from birthday parties to funerals. But in modern society, it is not simply to know the proper (22)______ for behavior in your own country. It is necessary for people who work or travel abroad to understand the rules of etiquette in other cultures as well. Cultural differences can be found in such simple processes as giving or receiving a gift. In Western cultures, a gift can be given to the receiver with relatively (23)______ ceremony. (24)______, in some Asian countries, the act of gift-giving may appear confusing to Westerners. When a gift is offered, the receiver usually takes the gift and expresses his or her thanks. In Chinese culture, both the giver and receiver understand that the receiver will typically refuse to take the gift several times before he or she finally accepts it. In addition, to show respect for the receiver, it is (25)_________ in several Asian cultures to use both hands when offering a gift to another person.