"I'll bet," I said, and tried to scratch my right arm.

"I'll be happy to take it off," he said, scratching his arm.

She scratched her arm, but could not find the stickiness.

Even though his teeth scratched her bare arm, she did not strike at him.

"We stay away from there," Nat told me, scratching his arm.

This was a wonderful thought, and using the key to scratch her arm had been a wonderful idea.

I moved my left hand to scratch my right arm.

He fought off an urge to scratch his own arm.

She stood in the kitchen staring at the oil and scratching her arm.

She was scratching her arm vigorously as she left the room.