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Here are the answers: 1. My father **was watching** the news on the television at 7:30 last night. 2. They **were not helping** the flood victims at 9 o'clock last night. 3. Mark **was revising** his lesson when Amanda **came**. 4. She always **dreamed** of being a princess when she **was** a child. 5. We **decided** to cancel the trip because the weather **was** so bad. 6. I **saw** an old man lying on the pavement while I **was waiting** for the bus. 7. The doctors **did not tell** Mike their diagnosis while he **was receiving** hospital treatment. 8. Where **were** they when the earthquake **happened**? 9. While Lisa **was playing** the piano, her mother **was cooking**. 10. I **was washing** the dishes when the phone **rang**. 1. The summer sales start next Tuesday. 2. Some people go to a shopping centre for entertainment. 3. She bought these things at a convenience store near her house. 4. We received the complaint from the customer yesterday.