I just totally forgot________the phone bill. I shouldve done it, but didnt. 1)paying 2)to pay 3)having paid 4)not to

I just totally forgot to pay the phone bill. I should’ve done it, but didn’t. — Я просто полностью забыл оплатить телефонный счет. Я должен был это сделать, но не сделал.

Did I just totally forget to pay the phone bill?

Who just totally forgot to pay the phone bill?

What did I do?

What did I just totally forget to pay?

Did I or did we just totally forget to pay the phone bill?

Did I just totally forget or remember to pay the phone bill?

Did I just totally forget to pay or not to pay the phone bill?

I just totally forgot to pay the phone bill, did not I?