Unfortunately, the old woman could shed no further light on the matter.

Perhaps the blood sample may shed some light on the matter.

I insisted that he had not shed any light on the matter.

No doubt, he could shed some light on the matter.

Do you think he could shed any light on the matter?

But she did shed some light on the matter.

Padraic was able to shed no light on the matter.

So obviously she can't shed any light on the matter.

Apparently she'd hoped he might be able to shed some light on the matter.

I think that this will shed some light on the matter.