The problem has been solved satisfactorily at last.

问题终于完满解决。

《新英汉大辞典》

None of the cases has been solved.

这两个案件都尚未解决。

youdao

But now that problem has been solved.

但是现在这个问题已经得到解决。

youdao

I don't think, some do, that the question of cultural relativism has been solved.

虽然有些人持相反观点，但我觉得,文化相对主义这个问题并没有被解决。

普林斯顿公开课 - 人性课程节选

Neither this nor any other of Russia's most famous contract killings has been solved.

FORBES: Godfather of the Kremlin?

"There is no more dissent, no more problems, everything has been solved, " said Mr Blatter.

BBC: Maracana Stadium

But he is said to be delighted that her murder has been solved, as is her brother Dennis.

BBC: How science caught up with killer