5. Complete the sentences with the correct form of the verbs in brackets. Use the past simple or past continuous. 1) While I (walk) to school, I (meet) my friend. 2) She (cook) dinner when the phone (ring). 3) They (not / sleep) when the storm (start). 4) What (you / do) when I (see) you yesterday? 5) He (fall) while he (run) in the park.

1. While I was walking to school, I met my friend.
2. She was cooking dinner when the phone rang.
3. They weren’t sleeping when the storm started.
4. What were you doing when I saw you yesterday?
5. He fell while he was running in the park.

Past continuous gives the ongoing background action; past simple identifies the completed or interrupting event.