15. The exhibition has been held on the of World Press Freedom Day annual celebration.
举一反三
- _____ , as a declaration of people’s freedom of the press, has been a weapon in the later democratic revolutionary struggles.
- The celebration of Thanksgiving Day has been observed to thank ______. A: God B: their ancestors C: their parents D: the pilgrims
- St. Patrick's Day is a cultural and religious celebration held on April17 in Ireland.
- Easter Day has a fixed celebration date.
- The annual International Nurses' Day is celebrated around the world on the day when she died.