Christmas is a holiday usually celebrated on Dec. 25 ________ the birth of Jesus Christ.
-----They say Tom’s brother is a billionaire. ----_____________? He wouldn’t accept any help from his brother, even though it was offered.
Oct. 1st, ____ is our National Day, is celebrated with singing and dancing.
Up to now, large quantities of food ____ to Africa to save the starving people.
---Why did you stop writing? --- I _____ my writing paper.
The building _____ Rome times has been rebuilt recently.