聽下面一篇短文，回答小題
（1）What day is it today？
A.Saturday.
B.Sunday.
C.Friday.
（2）How did they get to the People's Park？
A.By bus.
B.On foot.
C.By bike.
（3）What were some boys doing when the writer got there ？
A.They were climbing the trees.
B.They were planting the trees.
C.They were watering the trees.
（4）What did the writer do in the park？
A.He was playing under the trees.
B.He picked up the rubbish.
C.He made the public walls dirty.
（5）What will the world be like if everyone protects the environment？
A.It will become much dirtier.
B.It will become more and more crowded.
C.It will become more and more beautiful.