8(a^3+b^3+c^3>=(a+b)^3+(b+c)^3 + (c+a)^3

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VI. Write : 1. We / finish / classes / two hours ago ……………………………………………………………………………………… 2. My parents / give / lovely present / last birthday ……………………………………………………………………………………… 3. I / receive / letter yesterday but I / not / know / who / send / it / me ……………………………………………………………………………………… 4. Lan / make / new dress / last week but it / not fit because it / be / too small ……………………………………………………………………………………… 5. Last weekend / students / class 7A / have / nice trip / Dalat ………………………………………………………………………………………. 6. Last year / Huy / play / games / much , so he / not / pass / her exam ………………………………………………………………………………………. 7.When / he / leave / house / yesterday? ………………………………………………………………………………………. 8. Nam / be / school library / three hours ago / borrow / comics ………………………………………………………………………………………. 9. Mr Nam /learn /English last week but he / not / know / read it ……………………………………………………………………………………… 10. Minh / have / birthday last Saturday / and / invite / lot / friends …………………………………………………………………………………… VII. Change these verbs in to the past form 1. Do  ………….. 2. Give  ………… 3. get …………….. 4. Have  …………. 5. Send  …………. 6. Take  ………….. 7. go  ……………. 8. return  ………… 9. buy  …………… 10. be  ………….. 11.put  ………….. 12. watch  ………….