My sister usually .... me her beautiful scenery

we .... seven planets in our orbit.

.... are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto.

We .... living on Earth now.

I do interested in one planet. It is Mars because it .... red surface. Recently, some researches found that there were a sign of human existence there.

Besides Mars, I also .... about the giant gas of planet, it is Jupiter.

So, there is also one ring planet there. It .... Saturn because It has large ring over it.

I .... one day I can Visit the entire planets in our orbit.

How many planets are there in our orbit ?

I think, I need to use many platforms in my English class. So, what to choose ?