Letter 1 Dear Alice, I wish you a happy birthday! It is your 21st birthday today, which is the happiest day in your life. 21 years ago, a lovely little girl-you-came to the world. Your existence really makes us feel very happy and proud. As one of your good friends, I do hope you be happy every day. I wish all your dreams come true and first of all a happy birthday. Sincere Betty Letter 2 Dear Betty, I’m very glad to receive your letter. Being with you is my happiest time in my life. The past 21 years witnessed the growth of our friendship, so my birthday also means the sweet day of our friendship. My parents arrange a party for me on Friday, and I hope that you can come to the party, which will be my great honor. Sincere Alice Letter 1 and Letter 2 Today is (1) birthday. Alice’s existence makes Betty feel very happy and (2) . The past 21 years witnessed the growth of (3) . In letter 2, Alice says her birthday means (4) of their friendship. The persons arranging the birthday party: (4) .