1)listen!somebody (play) the piano 2)i(work) in the garden at 6 oclock yesterday 3)when we came,they (dance) 4)my brother (prepare) for his exams,be quiet 5)he(not to smoke) now 6)at his time tomorrow they(fly) to spain 7)what you(do),when i called you yesterday? 8)where are the children?-they(have dinner) 9)tom gave me an interesting book.i(read)it now 10)she (watch tv)from 4 till 6 tomorrow

Here are the correct verb forms for the sentences provided, primarily focusing on Continuous (Progressive) tenses to match the context of each action. Corrected Sentences

1. Listen! Somebody is playing the piano.
   • Explanation: Used for an action happening at the moment of speech.
2. I was working in the garden at 6 o'clock yesterday.
   • Explanation: Used for an action that was in progress at a specific point in the past.
3. When we came, they were dancing.
   • Explanation: Used for a continuous past action that was interrupted by another shorter action (came).
4. My brother is preparing for his exams, be quiet.
   • Explanation: The command "be quiet" indicates the action is happening right now.
5. He is not smoking now.
   • Explanation: Present Continuous negative for an action not occurring at this moment.
6. At this time tomorrow they will be flying to Spain.
   • Explanation: Future Continuous for an action that will be in progress at a specific time in the future.
7. What were you doing when I called you yesterday?
   • Explanation: A question about a past continuous action interrupted by a phone call.
8. Where are the children? — They are having dinner.
   • Explanation: Describes what the children are doing at the current moment.
9. Tom gave me an interesting book. I am reading it now.
   • Explanation: Indicates an ongoing process in the present.
10. She will be watching TV from 4 till 6 tomorrow.
    • Explanation: Future Continuous for an action that will take place over a specific duration in the future.

Summary Table of Tenses Used

Would you like me to provide the negative or interrogative forms for all these sentences as well?