The girl's eyes gave every expression of real regret when she had put the anxious question.
Even many Japanese said they felt a strong expression of regret was long overdue.
I believe any expression of regret would meet the case.
It had been such an odd expression of delight and regret.
He shook his head, with an expression of regret, like a professor who is not given the expected answer from a good student.
He seemed to put a long life into each expression of regret.
With an expression of infinite regret, he shook his head and looked up.
He had expected at least a token expression of regret.
His broad round face took on an expression of genuine regret.
The Israeli authorities did not demand from him an expression of regret.