单项选择题
Question 18 is based on the following news. At the end of the news item, you will be given 10 seconds to answer the question. Now listen to the news.
What happened to the schoolboy?()
A.He forgot to lock the cold store door.
B.He was forced to work throughout the night.
C.He caught cold while working at the butcher’s.
D.He was locked up by accident in a cold store.