Question

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Which sentence is free of errors?

It was a moment, I would never forget that changed my life.

I had seen them, walking up the path, the three men, in uniform.

I looked up at my moms face her frightened face.

A minute later, there was knocking on the door.

Answer 1

The very last sentence: "A minute later, there was knocking on the door." Every single component of that sentence is correct.