challenge (n) - something that is hard to do, damage (n) - physical harm that is done to something or to someone's body, essentially (adv) - basically, fundamentally, for some time - for a long period of time., guide (n) - a person who leads or directs other people, law (n) - the whole system of rules that everyone in a country or society must obey, optional (adj) - available as a choice but not required, probable (adj) - likely to happen or to be true but not for sure, required (adj) - to make it necessary for someone to do something, tradition (n) - a belief, custom or way of doing something that has existed for a long time among a particular group of people,

Module E lesson 35

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