I think that is the only difficulty about children being in charge.

The only difficulty is that we don't know where they are.

The only difficulty now was in getting down out of the tower.

His only difficulties have been on the ground, he said.

My only difficulty seemed at first to be with the men themselves.

The only difficulty is that on a Friday night people are out to drink.

The only difficulty is finding room to keep all the plants.

The only difficulty is to get the brief for you.

But that had not been the only difficulty in his relationship with Jennifer.

The only difficulty I see for him is, he's made a lot of money.