This author questioned the possibility of solving cubics by pure algebra, and biquadratics by geometry.

Advocate Maleka questioned the possibility of their being nepotism as an influence in Mwelase's dealings with Eskom.

Not so long ago, an angling correspondent in an English newspaper questioned the possibility of realising the scheme fully and permanently.

I had prepared a sermon, but, amid such din, I, for a moment, questioned the possibility and even propriety of delivering it.