Complete these sentences with the verb in the brackets. Put each verb in the past continuous tense

4- Complete these sentences with the verb in the brackets. Put each verb in the past
continuous tense.
1. I lost my keys when I ________ home. (walk)
2. It was raining while we ________ dinner. (have)
3. I saw the department stores when I ________ on the bus (sit)
4. Her phone rang while she ________ to her new boss. (talk)
5. My friends ________ to work when they heard the news on the radio. (drive)
6. He ________ his bicycle when the cat ran across the road. (ride)
7. We couldn't go to the beach yesterday because it ________. (rain)
8. It was a lovely day. The sun was shining and the birds ________ in the trees. (sing)