"For" is used to indicate the organization or entity one works for.

"In" is used to express one's passion or interest in a particular field, such as "passion in writing poetry."

"For" is used to indicate the reason or purpose for which someone is known.

"For" is used to indicate the entity or organization someone worked on behalf of.

"For" is used to indicate the reason or quality for which someone is admired, in this case, dedication.

Use "in" to indicate someone's interest or involvement in a particular field, like "interest in photography."

"An" is used before a noun starting with a vowel sound, as in "an elegant dress."

"For" is used to indicate the purpose of the action, which is getting groceries in this case.

Use "for" to indicate someone's skill or talent in a specific area, like "talent for painting."

"For" is used to indicate the reason for someone's recognition, in this case, kindness.