假如你班要举行一次登山活动，请根据以下提示，写几条登山旅游时应遵守的规则，以保护环境和确保安全。80词左右。

　　 提示：

　　 1．不要在林中点火(start a fire)，以保护树木。

　　 2．不要乱扔垃圾，维护环境卫生。

　　 3．请保持溪流清洁，这是村民的饮用水源。

　　 4．请勿伤害动物、鸟类和昆虫；请勿挖掘(dig up)和采摘花草。

10．The earth is our home．It __________ (must protect)well．

9．I had a bad cold．The doctor asked me 　__________ (stay)in bed．

8．-Have you heard the song Supper Star?

-Yes．I heard it __________ (sing)by S．H．E．

7．Do you know what she __________ (cook)this time yesterday?

6．Yesterday I __________ (tell)that we would have a picnic in the park．

5．Could you ring me up as soon as he __________ (arrive)?

4．The students __________ (read)English when the teacher came in．

3．The rain__________ (stop)when I woke up this morning．