When does the winter vacation begin?

When does the winter vacation begin? When does the winter begin Guangzhou意思是 When does summer vacation begin?怎么回答 when does the school begin When does the unistiy begin. when does the class begin?怎么回答 When did the 2010 Winter Olympics begin的中文 The winter vacation 作文 the winter vacation The winter vacation is . when does the party begin At 7:30. when does the basketball game begin? 请选择：