After listening: Complete the following statements according to what you have heard. 1. The young store-keeper added up the items once more, because he was not feeling quite sure as to ( ). 2. It was found out that he overcharged his customer ( ). 3. Having walked to the lady's home and paid over the overcharge, Abe returned and felt ( ). 4. From the anecdote we can see young Abe valued ( ) above all else.