Чи є тут якась помилка в тексті що на фото?

На странице,которую видно,вправа 3, ошибок нет!! Молодец

hi!

i have got  your letter! i was glad to hear from you again! thankyou for your invitation. but i am compelled to upset you, i can't go with you to the concert because of my parents who are going  to the cinema at the same time and i have to stay with my little brother. next week i wiil be free and we will be able go to another concert. thanks for understanding!  

yours,

nina

listen, ivan singing in the room

hi dont see, i see him, because he read anything with big interesting

calling him now, i think, he dont sleeping

look on man, he   sit. it is our advokat