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

Решение:

• 1 I was enjoying my birthday party last week. (Correct)
• 2 What were you doing yesterday at 4 pm? (Correct)
• 3 I went to the cinema yesterday. (Mistake: Should be in past continuous if asking about what someone was doing at a specific time yesterday). Corrected: I was going to the cinema yesterday.
• 4 I liked it because was playing my favourite team. (Mistake: Missing subject 'it' before 'was playing'). Corrected: I liked it because it was playing my favourite team.
• 5 When we were on holiday, we were swimming every day. (Mistake: 'every day' refers to a habitual action, so past simple is more appropriate here). Corrected: When we were on holiday, we swam every day.

Два правильных предложения: 1 и 2.