题目

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。The Chinese New Year red envelope (红包) is one of 【1】 most popular Chinese traditions for children on the Chinese New Year. They receive red envelopes with money inside! Little kids 【2】 (usual) learn the words “hong bao” in Mandarin (普通话) very quickly.The red color 【3】 (stand) for good luck for the Chinese. Traditionally the envelopes are decorated with gold letters and messages of 【4】 (happy) or Chinese lucky symbols like the Chinese dragon, the phoenix, etc. Nowadays, in计算：      ．