Explanation

• Sentence: The company is concerned about the well-being of its employees.
• We use "concerned about" when we mean worried, anxious, or caring about someone's welfare.
• We use "concerned with" when we mean involved in, dealing with, or busy with a specific topic or business.

Additional information:

• Concerned about means worried about something.

Last verified on 27-07-2026

Explanation

• The correct sentence is: “She is responsible for organizing the event.”
• The phrase responsible for is used to describe a duty or task someone is in charge of.

Last verified on 10-10-2026

Explanation

• The correct preposition with “proficient” is in.
• “Proficient in” means skilled or expert in a subject.
• It is commonly used with subjects like mathematics, English, science.

Last verified on 27-04-2026

Explanation

• The shoes are polished brightly.
• Brightly means in a bright or shining manner.

Last verified on 08-11-2026

Explanation

• "Our TV has not been working since last week."
• "Since" is used to indicate the starting point of an action that continues to the present.

Last verified on 08-11-2026