6. Thank you so much for lending me money, I'll ______ soon.

Thank you so much for lending me money, I'll pay you back soon. *Перевод: Большое спасибо, что одолжили мне деньги, я скоро верну вам (деньги).* Explanation: "Pay you back" means to return the money that someone has lent you. It is a polite and appropriate response in this situation.