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The meeting started on time. There was pin-drop silence as the President spoke. I sat at the front row seat beside a lady who represented the United Kingdom.

Is there any  mistake? Thanks
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I don't much care for 'pin-drop silence'; it is overly precious.

The meeting started on time. There was absolute silence as the President spoke. I sat in a front-row seat beside a lady representing the United Kingdom.
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Thanks MM. One more question: Is the last sentence grammatically incorrect? (I assume that you have made the corrections to make it sound good. Am I right?)
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Your original is grammatically fine and your assumption is correct; I am just trying to give you some ideas on polishing sentence flow.
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Thanks a lot MM. I am pleased to know that.
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