Englishfor English speakers
mandatory
Adjective
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If something is mandatory, rules or laws say it must be done.
It is mandatory for children to go to school.
field
Noun
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A field is an open area of land that can be used for many different things, from sports to crop-growing.
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A field is an area of study or work.
He was an expert in the field of American history.
field
Verb
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If you field something, you answer it; you address it.
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If you field the team, you place them in the game.