Answer:
to keep alive
Explanation:
so like if u preserve food, for example, the shelf life is extended
Good thinking coming on here but we cannot write a summary for you. They are really easy to write tho. Type the passage and I could possibly do it for u
b) to express formality
Hope I helped! ( Smiles )
Instead of writing it in ENGLISH you should have wrote it in the SPANISH ☺️☺️☺️