How to protect flowers and trees?

Protecting the environment is very important.

But how can we do it? I think we should do the following:

1.

2.

3.

4.

In a word, let's work together to keep our environment clean and healthy.

Generally speaking, writing four sentences is good.

If you want to write a sentence, you will get a score in the general exam as long as you roughly echo it according to the content of the article.