聽材料，回答問題。
（1）Why did Peter throw away the pen？
A.Because it's too old.
B.Because it's broken.
C.Because he has a new one.
（2）What are the metal parts of the pen used to do ？
A.They're sold to raise money.
B.They're reused to make other things.
C.They're collected for the science lab.
（3）What are they talking about？
A.The school rules.
B.The pen factory.
C.Recycling things.