1. A lot of people use cell phone → Cell phones…………. 2. Miss. Diep hasn’t taught us since the last semester.→ We………………. 3. Mr. Vinh teaches our English lessons. → Our English lessons ........................................... 4. A student is doing that experiment. → That experiment .................................................... 5. Our teachers give us a free period this Saturday to prepare the festival. → We ...................................................... 6. Did you buy this dictionary two weeks ago? → Was ............................................................ 7. We should clean our teeth twice a day. → Our teeth………………….. 8. Alan’s knowledge about science and technology doesn’t impress me. → I .................................................. 9. Her father drive all of us to school every day. → All of us ................................................... 10. They are going to build a new school here next year. → A new school .............................................

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