They are fighting because they are rivals.
The best option which represents the main idea of the poem is B) <span>Seasons and Ferris wheels are like Earth's journey around the sun.</span>
I believe D.social interaction
Cob has been used since the 17th century as a building material. It is made by mixing dry sand, sifted clay and water. A cob house is a house that is made from this material. A benefit of using this material, is that it is sustainable and only uses natural products.
A. using the dictionary is the only necessary step in the process of vocabulary building.
