Comparatives and Superlatives Error Correction

This comparatives and superlatives error correction exercise trains the proofreading decisions learners miss most often: avoiding double forms such as more + -er, choosing comparative or superlative meaning from context, adding the before superlatives, and keeping as...as comparisons in the base adjective form.

Wrong: "This sofa is more softer than the chair." Correct: "This sofa is softer than the chair."
Wrong: "It was most exciting film in the festival." Correct: "It was the most exciting film in the festival."

Some sentences are already correct, so this route is not a mechanical form-changing drill. Read the comparison first: are there two things, a whole group, or an equal comparison? Then decide whether the sentence needs -er, more, the -est, the most, an irregular form, or no correction at all.