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Answer:
hairdresser is to scissors
Explanation:
Hairdressesers use scissors to cut hairs
Explanation:
presentation is to present something about given topic or it is the explanation of topic in front of people
Answer:
Leave empty
Explanation:
Water is uncountable, so definitely not "a" or "an".
We're left with either leaving it empty or "the". But "the" suggests that it's not just any water, but some type/body of water in particular, which is not the case.
Water is essential to life.