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giải PT Sau : x/2(x-3) + x/2x+2 = 2x/(x+1)(x-3) Đáp Số : S={0;3)
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Exercise 5: Give the correct form of the verbs in brackets: used to + V or simple past. 1. I (see) ........... Marcus at the library working hard. He told me to say hello to you. 2. She (be) ....................... a lot happier, but then she lost her job. 3. There (be) .................. three restaurants in this town, but two closed down leaving only one. 4. If you look over there, you can see the field where they (fight) ....................... the Battle of Harris Hill in 1509. 5. Did you (take) ....................... a lot of photos when you were in Moscow last year? 6. How many hours a day did you (go) ....................... to school when you were ten? 7. Children never (talk) ....................... so aggressively to their parents. It’s terrible! 8. Soldiers (build) ....................... this bridge near the end of the Second World War. 9. Your mother (have) ................... a Yorkshire Terrier when she was a young girl, didn’t she? 10. When I was five, I (be) ....................... able to do incredible gymnastics. Now I can’t even touch my toes.

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