There wasn't somebody to help mum to decorate the room before my birthday, so myself.

<h3>Ответ (EN):</h3>

1. There wasn't <strong>anybody</strong> to help mum to decorate the room before my birthday, so <strong>she</strong> did it myself.

<h3>Перевод (RU):</h3>

1. Не было никого, кто помог бы маме украсить комнату к моему дню рождения, поэтому она сделала это сама.

Ответ: There wasn't anybody to help mum to decorate the room before my birthday, so she did it myself.