填空题 1、--When is New Year’s Day(元旦)? --It’s _________________. 2、--When is Tree Planting Day? --It is _________________. 3、--When is April Fool’s Day(愚人节)? --It’s _________________. 4、--When is Teachers’ Day(教师节)? --It’s _________________. 5、--When is Christmas Day(圣诞节)? --It’s _________________.