Listen ! Someone ________  the door.

[　　]

Listen! Someone ________ (敲门) the door.

[　　]

A．knocks at　　　    　　　　B．knock at

C．is knocking at　　　　　 　  D．knocked on

Jane got home late at night. She was going to knock at the door. Just then it opened.
Her father was standing by the door. He was a tall man with white hair.
“Come in,” he said. “I am getting cold.”
Jane went in. Her mother was waiting in the room. Her mother was a short woman in her early forties. She was wearing a nightdress(睡衣).
Her father closed the door.
“Well,” he said, “Where have you been? You promised to be home at eleven o’clock. It’s one o’clock now.”
“It’s only ten to one.”
“That doesn’t make any difference,” her father replied angrily.
“We’ve been very worried about you,” said her mother.
“I’m sorry,” Jane said. “I was at a dance. I didn’t notice the time.”
“You’ve got a watch,” said her father. “Your mother and I have waited for a long time. We didn’t know where you were.”
“I can look after myself,” replied Jane. “I’m not a baby any more.”
54. When Jane got home, her parents _______.
   A. were in bed                 B. turned on the light
   C. were waiting for her          D. did not get up
55. Jane promised to be home at eleven, _______.
   A. but she was nearly two hours late       B. and she came back before dark
   C. but she stayed out the whole night      D. and she returned on time
56. Why did Jane get home late?
   A. She had to walk a long way.           B. She left her watch at home.
   C. Her watch stopped.                  D. Time passed before she knew it.
57. Which of the following is true?
   A. Jane’s parents knew when she would be back.
   B. Jane refused to apologize, so her parents were angry.
   C. Jane thought she was old enough to take care of herself.
   D. Jane’s mother was as tall as her father.