Editing: Walt Disney was our hero. He | e.g. was | Correction: is. (a) left me a legacy that can (b) be enjoy time and again. He (c) knew who to entertain us so well. (d) He developed a process in creating animated films.

This is an editing/omission-type question (4 marks: 1 mark per correct error–correction pair) testing tense, voice, and word-choice accuracy.

Key points

• (a) Tense — 'can' should be 'could' to match the past-tense narrative about Walt Disney's legacy.
• (b) Voice — 'be enjoy' is grammatically broken passive; it should be 'be enjoyed' (past participle after 'can be').
• (c) Word choice — 'who' is wrong; 'how to entertain us' needs the interrogative adverb 'how', not 'who'.
• (d) Preposition — 'in creating' should be 'for/of creating', matching the correct collocation with 'process'.

Common mistakes

• Overlooking that the whole passage is in past tense, leading to wrong modal/tense choices.
• Missing subtle passive-voice construction errors (missing '-ed').
• Confusing 'who' (person) with 'how' (manner) in reported/embedded questions.

Real-world

• Editing skills like these are directly used in proofreading official documents, articles, and reports, where a single wrong preposition or tense can distort meaning.