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ngoclinh190706
2 năm trước
tìm tất cả các số nguyên dương n sao cho khi viết 6^n +1 trong hệ thập phân ta được 1 số có tất cả các chữ số bằng nhau
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IV Fill in the blank with suitable active and passive verb forms. ------ --- 1. This house - in 1970 by my grandfather a) Built b) Was built c) Was build d) Has built 2. The robbers by the police. a) Have arrested b) Have been arrested c) Was arrested d) Had arrested 3. We -------- for the examination. a) Have preparing b) Are preparing c) Had preparing d) Have been prepared 4. It since yesterday. a) Is raining b) Has been raining c) Have been raining d) Was raining 5. |---- for five hours. a) Have been working b) Has been working c) Was working d) Am working 6. The students to submit their reports by the end of this week. a) Have asked b) Are asked c) Has asked d) Are asking 7. She - for a while. a) Are ailing b) Is ailing c) Has been ailing d) Have been ailing 8. The teacher the student for lying. a) Has been punished b) Punished c) Is punished d) Was punished 9. ----- to become a successful writer. a) Have always wanted b) Am always wanted c) Was always wanted d) Am always wanting 11. As the patient could not walk he -- home in a wheel chairs a) Has carried b) Has been carried c) Was carried d) Was carrying

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