圣诞节是喜庆的日子——因为不用上课。 

semester n. 学期 

rejoice v. 欢喜 

　　

Christmas greetings and best wishes!

　　致圣诞贺忱与最美好的祝福!

　　

Wishing you every happiness when Christmas is near, and expressing appreciation for your cares and

　　concerns during the year.