The question proved contentious, and highly disturbing to the French visitors.

Such questions, however, quickly prove too heavy for this wimp of a movie.

This question has not been explored but may prove to be the most critical.

The question of how to deal with urban pollution has proved most difficult of all.

The question of how these early penguins gave rise to the living lineages has proved difficult.

But the question of generating credibility with him proved not to be a problem at all.

So the seventh question may well prove to be gratuitous.

Barney sent for the other two boys, but his questions to them proved equally unrewarding.

But the question of how to treat it has proved much trickier.

She was less than reassured when the question that slowly opened his mouth proved to be "What have you forgotten?"