May I know your concern, sir?I have a lot of concern for your health.
Her concern for the puppy was touching.One concern was the leaking roof.
i have a lot of concern, or worry about you
no it is not an concern
'To whom it may concern' is right. 'To whom soever it may concern' is wrong.
i would suggest taking him to a psychologist.
What was the Monsieur’s main concern
If it's causing you concern, you should see a doctor.
his main concern is about his reputation....
agressive
The word Concern? if so then yes..
my concern is (What is causing the Headache)