学进去

The Spring Festival is our Chinese festival. There are ___________ names for each year. We call it the year of the Rat, the year of the Ox, the year of the Tiger... and the year of the Pig. 2021 is the year of the Ox, and the coming year 2022 is the year of the ___________. Before the Spring Festival, people are very busy. They go ___________ and clean their houses. On Chinese New Year's Eve, there is a big family ___________. After it, we usually light some fireworks and firecrackers. But this year, we will not do that. Because that will make the air ___________. We should protect our environment.