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Hello, may you correct my letter, please?

Mike Mouse

4321 First Street,

London

United Kingdom

Dear Mike,

I haven't seen you since last spring. Itʼs been a long time. I miss you. I heard that you had broken your leg few days earlier. I hope you will be fine soon as possible.

I'm writing to you, because I want to invite you in the concert. "Metallica" started they tour around the

world this year and next year they will arrive in Vilnius. I have two tickets to the concert. It will be held April 21 with doors opening at 7 p.m. In Siemens Arena. I know that you really likes them! It's the best chance for you to see "Metallica".

I want to believe that you won't miss it. Moreover, I really want to see you and share everything. You're my best friend. If there’s anything you still do not understand or you can’t come, you can contact me.

I look forward to hearing from you soon

Love,

Urte
Comments  
Dear Mike,

I haven't seen you since last spring. Itʼs been a long time. I miss you. I heard that you had broken your leg few days earlier. I hope you will be fine AS soon as possible.

I'm writing to you, to invite you TO the concert. "Metallica" started they tour around the world this year and next year they will arrive in Vilnius. I have two tickets to the concert. It will be held ON April 21 with doors opening at 7 p.m. In Siemens Arena. I know that you really LIKE them! It's the best chance for you to see "Metallica".

I believe you won't miss it. Moreover, I really want to see you and share everything. You're my best friend. If there's anything you still do not understand or you can't come, contact me.

I look forward to hearing from you soon

To my mind, this variant is better!
shouldn't it be

"Metallica" started THEIR tour....