根据短文内容和所给中文提示,在空白处写出正确的单词，每空-词

    Couplets(对联) have been around for about 600 years. They were started in Ming Dynasty. At  (首先), people used red paper  (代替) of peach wood charms(桃符) to make the Spring Festival couplets. After Qing Dynasty，the couplets were once  (广泛地) popular. Lots of famous couplets appeared. With the  (发展) of the international cultural exchange, the  couplets were also  (介绍) to Vietnam, Korea, Japan, Singapore and other  (国家). The customs of sticking these couplets still remain now.

    Couplets are usually in different  (形状) and colors. Nice words and  (句子) are written on the couplets. Different couplets are put on doors, walls or windows as  (象征) of wishes for good  (运气) and a happy new year.