Một hình thang có trung bình cộng hai đáy là 8,3 dm. Chiều cao là 7,8 dm. Tính diện tích hình thang đó.

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1. I (learn) ……………… English for seven years . 2. But last year I (not / work)……….. hard enough for English, that's why my marks (not / be) …………really that good then. 3. As I (pass / want)……….. my English exam successfully next year, I (study) …….. harder this term. 4. During my last summer holidays, my parents (send) …………me on a language course to London. 5. It (be)…………. great and I (think) ……….I (learn)……….. a lot. 6. Before I (go) ………………..to London, I (not / enjoy) …………..learning English. 7. But while I (do)…………. the language course, I (meet)………… lots of young people from all over the world. 8. There I (notice)………. how important to speak foreign languages nowadays. 9. Now I (have)………… much more fun learning English than I (have) …………before the course. 10. At the moment I (revise)…………. English grammar. 11. And I (begin / already)………………. to read the texts in my English textbooks again. 12. I (think)…………… I ……………..(do) one unit every week. 13. My exam (be)…………… on 15 May, so there (not / be)………….. any time to be lost. 14. If I (pass) ……….my exams successfully, I (start)………. an apprenticeship in September. 15. And after my apprenticeship, maybe I (go)………….. back to London to work there for a while. 16. As you (see / can)…………….., I (become)………….. a real London fan already. xin hãy giúp mk nha! r mk vote 5 sao cho