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VI. Turn these sentences into passive voice: 1. My father waters these flower trees every morning. ……………………………………………………………………………………………… 2. John invited Fiona to his birthday party last night. ……………………………………………………………………………………………… 3. Her mother is preparing the dinner in the kitchen. ……………………………………………………………………………………………… 4. We should clean our teeth twice a day. ……………………………………………………………………………………………… 5. Our teachers give us a free period this Saturday to prepare the festival. ……………………………………………………………………………………………… 6. People invented the wheel thousands of years ago. ……………………………………………………………………………………………… 7. Are they building a statue of Chu Van An? ……………………………………………………………………………………………… 8. Did you buy this dictionary two weeks ago? ……………………………………………………………………………………………… 9. They will not provide pencils at the test, so please bring your own. ……………………………………………………………………………………………… 10. Mr. Binh hasn't taught us since the last semester. ………………………………………………………………………………………………

Exercise 1: Kết hợp câu dùng câu điều kiện 1. He can't go out because he has to study for his exam.  If .......................................................................................................................................................... 2. She is lazy so she can't pass the exam.  If ...................................................................................................................................................... 3. He smokes too much; that's why he can't get rid of his cough.  If ..................................................................................................................................................... 4. I can't play football this afternoon because I felt tired.  If ....................................................................................................................................................... 5. Olga and Ivan weren't paying attention, so they didn't see the sign marking their exit from the highway.  If ...................................................................................................................................................... 6. She can't be employed because she doesn't have a college degree.  If ................................................................................................................................................... 7. She walked to the meeting. She was late.  If .......................................................................................................................................................... 8. Unless you promise to return back, I won't lend you.  If ................................................................................................................................................................ 9. We put off our trip because the weather was terrible.  If .......................................................................................................................................................... 10. Sally doesn't know what she has to do for homework because she was absent from school on Friday.  If ...................................................................................................................................................... 11. If you do not like this one, I'll bring you another.  Unless ........................................................................................................................................... 12. Martin failed his driving test last week because he was very nervous.  But for............................................................................................................................................. 13. He will pay me tonight; I will have enough money to buy a car.  If ................................................................................................................................. 14. Leave me alone or I'll call the police.  If .............................................................................................................................................. 15. If you arrive at the office earlier than I do, please turn on the air-conditioner.  Should....................................................................................................................................................... 16. He died so young; otherwise, he would be a famous musician by now.  Had it ........................................................................................................................................... 17. The car breaks down so often because you don't take good care of it.  Were you ............................................................................................................................................. 18. Don’t tell lies to your boss or you'll be fired at once.  If ..................................................................................................................................................... 19. He didn't revise all his lessons, so he failed the exam.  Had ........................................................................................................................................................... 20. Rita is exhausted today because she didn't get any sleep last night.  If .................................................................................................................................................................