1. A: Whenever  I looked at one of your paintings, I used to stand there and wonder...  
    B:  How did I do it?  
    A: Why did you do it?

2. A:My  daughter's  music lessons  are  really  a good luck to me.               
    B: How is that?  
A:Because they helped me to buy my neighbour's house at half price.

3. A: Why  do  you  employ  such  an  ugly  man  as  a   cashier1，who has such near-sighted eyes, such a small  nose?  
    B: He will be easily recognized if he runs away with my money.

4.A:  Please  tell  me  how  you  can  be  so  successful  as a  house-to-
house  salesman?  
    B: The secret of my success is the first five words I always say when a woman opens the door: Miss, is your mother in?

5. A: This seal2 coat is fine. But will it stand  rain?  
    B: Madam, did you ever see a seal with an umbrella?

 

1．cashier n．出纳员
2．seal  n．海豹