Hi, Wang,
I have a problem with No. 3, because I know that Plymouth is a city in Massachusetts, the first to have been founded by the Pilgrims. I cannot connect this information with the sentence.
Anyway, here are my other answers:
1. Most of our ideas of how ancient people looked and dressed come from the works of artists.
2. Rocks have been forming, wearing away and re-forming ever since the earth took shape.
4. Charcoal is employed widely as a deodorizer because it absorbs gases well.
5.Women's councils could veto (vEto, right? There was a spelling mistake) a declaration of war by refusing to supply field rations.
6. Historians believe that forms of advertising must be as old as barter and trade.