Ответ:

1. Our body parts are important for doing something, let's take an example from our hands, our hands can be helpful to us to do something, to build, to cook,

for writing, Painting and a lot

2. For me.. I think that our ears, and our eyes. Thats really helpful, because of our eyes we can see the beauty of the world, and because of our ears we can hear the beautiful voices

3. Of course heart. That's extremely important for our living. Because of heart we are living, and seeing the all beauty of nature, smell the delicious meal, and hear the most beautiful sounds of seasons