Проверьте текст на ошибки, ! hi, friend! tomorrow my school organizate a sport competetion. i think that interest and funny, i going to patricipate in the swimming competition. what about you? i think you a good runner. you should partipicate too. with love , alex.

(organizate) will organise

(I think that interest and funny) I think that will be interesting and funny.

(i going to patricipate in the swimming competition.) I am going to participate

остальное все правильно

можно еще исправить with love на best wishes или best regards, но это по желанию