Past continuous : I was doing when...

Q1. Complete the sentence: I ________ TV when the phone rang.

Q2. What is the correct structure for the past continuous?

Q3. Choose the correct sentence using 'when'.

Q4. Complete: She ________ (read) a book while her brother ________ (play).

Q5. Which word often introduces the interrupting action in a 'past continuous + when' sentence?

Q6. What is the past continuous form of 'I do my homework'?

Q7. Identify the interrupting action: 'We were having dinner when the lights went out.'

Q8. Complete with the correct verb form: 'He ________ (sleep) when I called him.'

Q9. Which sentence is NOT correct?

Q10. What is the main purpose of the past continuous in these sentences?