Three years ago，a society was set up to________the endangered animal and plant life from dying out in this area.

sugar

If you often______ yourself, or in other words, ______ your strengths, you are likely to have______ self-esteem.

In order to continue to learn by ourselves after leaving school, we must________learn how to study in the school now. 

In order to ________ consumers, it's extremely important to consider what information should be included in the advertisement.