It was quite late at night. I was reading a newspaper in my room when I heard someone knocking at the door. I opened it and saw a young man with glasses standing there. Of course, I didn’t know him. He said that he was a friend of my sister’s and wanted to have a talk with her. I wanted to know if my sister had such a friend，but I had to let him in.
As he talked, I found that he knew nothing about my sister. Then I came to know that his words were not true. Suddenly my sister came back and the young man was so surprised that he didn’t know what to do for a moment. I caught the man by the arm at once while my sister was calling the police.
（ ） 1. This happened _____.
A. on one morning B. on one afternoon
C. on one evening D. on one night
（ ） 2. There _____ in the room when someone was knocking at the door.
A. was one person B. were two persons
C. were three persons D. were four persons
（ ） 3. The writer saw the young man for the _____ time.
A. first B. second C. third D. fourth
（ ） 4. The young man _____.
A. was a friend of the writer’s B. was a friend of his sister’s
C. was a stranger to them D. both A and B
（ ） 5. The young man was _____ when he saw the writer’s sister.
A. sad B. surprised C. happy D. sorry