An old woman is sitting on the sofa in her house with her daughter. Just then, a swallow(燕子)
stopped near them. “What’s that?” asks the mother. “ It’s a swallow,” answers the daughter. “Wh
at’s that?” asks the father again after some minutes. “Mother, I just told you. It’s a swallow,” answers the son again.
“What’s that?” asks the old mother a third time(次). “Why do you ask me the same question again and again? I have told you so many times ‘IT IS A SWALLOW [来自e网通客户端]