"Drugs are the single most devastating problem in America," he said.

Best of all, I've never had a single problem with the cops over here.

"It's a great system that's been in use for eight years without a single problem," he said.

The government doesn't need to solve every single potential problem that may exist.

"I have never seen this level of technical knowledge and experience brought to bear on a single problem."

"It's part of the business to try to find out what the single problem is," he said.

Only 2 percent of the public considered defense the "single most important problem for the president and Congress to deal with."

However, the single biggest problem is in the reading of the cards.

He was the sort who could focus his whole mind on a single problem.

We have not a single problem with the universal service.