A young woman carrying a three-year-old child got on a bus. The conductor hurried to give her a warm welcome and then kindly asked the other passengers to make more room for the woman and her child. On seeing this, people began to talk.“You know this conductor used to be very rude. Now suddenly he has changed his bad behavior , "said a middle-aged man.

    “Yes, he should be praised and we must write a letter to the company," said a second passenger.“Thatˈs right," another lady said,“I wish a newspaper reporter were here so that more people could learn from this conductor. "

      Just then a gentleman who looked like a teacher turned to the conductor and said ,“Excuse me, but can I know your name, please? Your excellent service must be praised..."

        Before he could open his mouth, the three-year-old child sitting on the young womanˈs lap interrupted,“I know his name. I call him Dad."

(1) The passengers were ________ to see the conductorˈs kindness to the woman and the child.

(2) One passenger suggested writing a letter to the company to ______    .

(3) What was the gentleman?

(4) The word“he”in the last paragraph refers to _______.