Questions 21 to 23 are based on the following news.
At the end of the news item, you will be given 15 seconds to answer the
questions. Now listen to the news. What have the Sierra rebels and pro-government militiamen done under an agreement to end the recent fighting
A．They have killed thousands of civilians. B．They have fought each other again. C．They have begun handing over their weapons to U. N. peacekeepers. D．They have found a diamond mine.