以前ホームステイしていたホストファザーが明後日誕生日を迎えます。誕生日メッセージとともに自分の近況を伝えたい。現在オーストラリアに留学して英語の勉強をしていること。学校が終わったら会いに行きたいなど。

Dear XXX,
Dad in Australia,

Happy birthday!
I wish you another healthy and happy year.

I have been studying English in Australia. I really enjoy it here and have made some really good friends. I will be here till next February. When the course is over, I would like to visit you again. I hope I will be able to talk with you and your family in English more fluently next time.

Please give my love to your family and people I met before.

Let me keep in touch,
[your name]