听短文，回答以下各小题。
（1）When did this story happen？
A.One morning.
B.One afternoon.
C.One evening.
（2）How many persons were there in the room when someone was knocking at the door？
A.One person.
B.Two persons.
C.Three persons.
（3）What did the young man wear？
A.A white shirt.
B.A pair of glasses.
C.Long trousers.
（4）Who was the young man？
A.A friend of mine.
B.A friend of my brother's.
C.A strange man.
（5）What might happen at the end of the story？
A.The police took away the young man.
B.The young man became their friend.
C.The young man ran away at once.