party invitations

Dear  classmates

       As l  am  sure  you  know  by  now, our  favorite teacher Ms.Fan ,is leaving. soon to go back to the XXHigh school.We are very sad.Because she often help me ang she is a interesting teacher. so, to show how much we are going to miss her.l have  a surprise party for her next Monday the 20th. We can eat and drinks. And you can say Thank you and goodbye to her.

       Can you come to the party?

XXX