He worries about his ability to don a gas mask.

But some loyalists worry about the party's ability to hold its own in the new, more competitive political environment.

"We were worried about our people's ability to accept abstract art," he said.

But as home prices fall, buyers worry more about their ability to meet the costs once they buy in.

Since we're both poor, Drummond claims to be worried about our ability to pay costs.

Most of all, they're worried about their ability to get jobs.

But before long, critics began to worry about his ability to lead the nation.

Others, however, worry about their ability even to taxi to the runway.

He was worried about his ability to handle the tough climb.

She wasn't worried about his ability to find her.