聽材料，回答問題。
（1）How old is Linda？
A.She is 13.
B.She is 18.
C.She is 20.
（2）Why wasn't Linda's father able to work？
A.Because he was too old.
B.Because he had a sore back.
C.Because he had a heart problem.
（3）What is Linda studying at university？
A.Music.
B.Education.
C.Medicine.
（4）When does Linda volunteer？
A.Every Monday afternoon.
B.Every Friday afternoon.
C.Every Sunday afternoon.
（5）Where is Linda going to work when she leaves university？
A.In her own village.
B.In a big city.
C.In the mountains.