A judgement needs evidence and qualification - Online practice 4

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Original passage, 'Theatre curtain': From the back row the stage looked smaller without its red curtain. Dust drifted through the work lights. Eli signed the inventory and returned the clipboard, but a strip of curtain cord remained in his hand. At the exit he found a knot in it, loosened it slowly and laid the cord on the table. He glanced towards the bare stage before the door shut. Claim: 'Completely moved on; no attachment remains.'