Name The Third Of A Kind Riddle

Riddle: Can you complete each list? 1. Red, White, and 2. Stop, Look, and 3. Sun, Moon, and 4. Ready, Set, ? 5. Readin', writin', and

Answer: 1. Blue 2 Listen 3. Stars 4. Go 5. 'Rithmetic

Source: https://www.riddles.com/4125