The word about is sometimes used as a preposition that means – on the subject of somebody/something; in connection with somebody/something
We often use it with the verb worry. We worry ABOUT something.
Look at these examples:
“I’m worried about the weather, there are many dark clouds in the sky and I am planning a barbecue this afternoon.”
“Parents often worry about their children, even after they become adults.”
Many people are worried about North Korea.
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