Students often make mistakes with superlatives. Correct the mistakes in these sentences.

1 It was the greatest holiday ever.

2 You should go to the Metro Centre because it's the biggest shopping centre in the world.

3 You can wear your oldest clothes for this job.

4 I'm really happy that you are coming tomorrow and it's best you come at 7 pm.

5 The most expensive cost £900 and the cheapest cost £400.