1 . 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 Mid-Autumn Festival is one of the 1 (important) festivals in China. It is an evening celebration when families gather together 2 (merry) to light lanterns, eat moon cakes and appreciate the round moon. 3 that special night, the moon is the roundest and brightest thing in the sky. The full moon is a symbol for family reunion, 4 is the reason why that day is also known as the Festival of Reunion.
The Mid-Autumn Festival celebrations date back to more than 2, 000 years ago. In the Tang Dynasty, people began to enjoy 5 admire the full moon as a custom. In the Southern Song Dynasty, however, people sent round moon cakes to their relatives as gifts in expression of 6 (they) best wishes for family reunion. After it turned dark, they looked up at the fall silver moon or went sightseeing by lakes 7 (celebrate) the festival. Since the Ming and Qing dynasties, the custom of Mid-Autumn Festival celebration 8 (become) even more popular. Together with the celebration appeared some special 9 (custom) in different parts of the country, such as 10 (burn) incense (香), planting Mid-Autumn tees, lighting lanterns on towers and fire dragon dances, etc.