'hange the voice of the following seI. I laughed at himII. She must do this work.II. We should help the poor.V. Please do not open the doorV. He will post the letter.I. Who will teach you now?I. Why did you not help him?I. Who drank all the milk?Do not call the servant.I can solve this puzzle.

'hange the voice of the following seI. I laughed at himII. She must do

1.	'hange the voice of the following seI. I laughed at himII. She must do this work.II. We should help the poor.V. Please do not open the doorV. He will post the letter.I. Who will teach you now?I. Why did you not help him?I. Who drank all the milk?Do not call the servant.I can solve this puzzle.
Answer» <p>1) He was laughed at by me.2) This work should be done by her.3) Poor should be helped by us.4) The door should not be opened.5) The letter will be posted by him.6) You will be taught by whom now?7) Why was he not helped by you?8) Milk was drunk by whom?9) The servent should not be called.10) This puzzle can be solved by me.</p>