他肯定在为他的错误付出代价。

He's certainly ___paying for his mistakes.

他把她永远锁在牢房里，以偿还她所做的事。

He had her locked forever in a cell, to ___pay for what she had done.

她将为她的背叛付出沉重代价。

She will ___pay dearly for her betrayal.