Correct the mistakes in three of the sentences. Which two are correct?

Here's a detailed explanation for the corrections: 1. Original: 'I was enjoying my birthday party last week.' - Correct. 2. Original: 'What were you doing yesterday at 4 pm?' - Correct. 3. Original: 'I went to the cinema yesterday.' - This sentence is correct as well. 4. Original: 'I liked it because was playing my favorite team.' - Correction: 'I liked it because my favorite team was playing.' 5. Original: 'When we were on holiday we were swimming every day.' - Correction: 'While we were on holiday, we went swimming every day.'