. —Does Li Ping serve in the army?

—No, but he ________ in the army for five years.

A. served B. has served

C. is serving   D. would serve

—How long _____ he ______ in the USA?

—Three years. But he never regrets coming back to China.

A young woman carrying a three-year-old child got on a bus. The conductor(售票员) 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. "That's 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 woman's lap interrupted (打断谈话), "I know his name. I call him Dad."
【小题1】The passengers were ________ to see the conductor's kindness to the woman and the child.

—Does Liu Hui serve in the army?

—No, but he ________ in the army for three years.

A. served B. has served  C. is serving   D. would serve

The novels written by the author sell best, but five years ago no one could have imagined how great a role he ______in the literary world.

1. A.
   was playing
2. B.
   was to play
3. C.
   had played
4. D.
   played