5.
1) C
2) D
3) E
4) A
5) B
6. Dear Carla,
Thank you for your letter. It was great to hear new news from you. Sorry, I have not written for so long because I have been bus at school. studying for me exams. How are you keeping?
About me, I'm going to go to Portugal and I will also swim in the sea and eat sea food.
I am looking forward to your answer. Keep in touch.
Yours,
(Твое имя на английском)