Zero Conditional Error Correction

This zero conditional error correction exercise targets the mistakes learners make most often: putting will after if, using a future result clause for a general truth, and confusing zero conditional with first conditional. In correct zero conditional sentences, both clauses stay in the present simple because the meaning is general, repeated, or always true.

Wrong: "If you will heat metal, it expands." Correct: "If you heat metal, it expands."
Wrong: "If children don't sleep enough, they will feel tired." Correct: "If children don't sleep enough, they feel tired."

Because this page asks you to fix the wrong chunk inside a full sentence, it trains fast proofreading of real zero conditional errors instead of isolated gap-fill production. That makes the exercise useful after standard gap-fill practice: you already know the form, but now you have to recognise when a future verb changes the meaning. Read each sentence as a general rule first, then check whether the verb forms match that always-true meaning.