Now the problem of pollution is getting more and more serious.It is very im- portant to protect the environment.As a student,what should we do to protect the environment?I think we should do like this:At school,when we clean the class- Now the problem of pollution is getting more and more serious.It is very im- portant to protect the environment.As a student,what should we do to protect the environment?I think we should do like this:At school,when we clean The class-