5 Correct the mistakes in the sentences. 1 It was the great holiday ever. 2 You should go to the MetroCentre because it's the big shopping centre in the UK. 3 You can wear your older clothes for this job. 4 The easier subject at school is PE. 5 The most expensive cost £900 and the cheaper cost £400.

1. The correct sentence is: It was the greatest holiday ever. Explanation: 'Great' is an adjective, and in this case, we need the superlative form to indicate the highest degree (the best holiday ever). The superlative form of 'great' is 'greatest'. 2. The correct sentence is: You should go to the MetroCentre because it's the biggest shopping centre in the UK. Explanation: Similar to the previous correction, we need the superlative form of 'big'. The superlative form of 'big' is 'biggest'. 3. The correct sentence is: You can wear your old clothes for this job. Explanation: 'Older' implies a comparison to something else. Here, we simply need to say the clothes are old, so we use the adjective 'old' instead of the comparative 'older'. 4. The correct sentence is: The easiest subject at school is PE. Explanation: We need the superlative form to compare all subjects at school, so the correct word is 'easiest'. 5. The correct sentence is: The most expensive cost £900 and the cheaper cost £400. becomes The most expensive cost £900 and the cheaper one cost £400. or The most expensive cost £900 and the less expensive cost £400. Explanation: The original sentence implies a direct comparison between two specific costs. It is technically correct, but you could specify more accurately that you are comparing the two options and not making a broad claim of something being more expensive. You can also replace 'cheaper cost' with 'less expensive cost'