Cho tam giác ABC đường cao AH (H thuộc BC) a) Biết AB2=BH.BC Cmr ABC là tam giác vuông b) Biết AH2=BH.CH Cmr ABC là tam giác vuông

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Làm nhanh giúp mik vs ạ hứa vote 5* I. Fill in the blank with the correct tense of verb: 1. Where ……………… Linda (come) …………………… from? – She (come) …………………… from England. 2. What day ……………… it (be) …..…………… today? – I (know/ not) .……….….……….…………… 3. …… you (visit) ………… your grandpa on Sundays? – Of course. I usually (go) ………… with my parents. 4. What ……………… Lan (do) …………… on Friday mornings? – She (go) ……………………… to school. 5. Today …………………… Thursday and it (be) …………………… the first of May. 6. What …………………… John (do) …………… on Saturdays? => He (watch) …………………… TV in the morning and (play) …………………… badminton in the afternoon. 7. In Vietnam, children (go) …………………… to school from Mondays to Fridays. 8. Every day, my mother (do) …………………… morning exercise at 5.30 a.m. 9. When …………… you (have) ……………… English? – I (have) ………………… it on Tuesdays and Thursdays. 10. There (be) ……………… seven days in a week. They (be) …………………… Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. 11. ………………… Phong and Lan (listen) ……………………… to music in the evening? - No, they don’t. They usually (do) ……………… homework and then (go) …………… to bed early. 12. Who …………………… you (talk) …………………… to on the phone now, Phong? 13. Mr Thanh (be) …………………… a doctor. He (work) …………………… in a hospital in the city center. Every day he (catch) ……………………… the bus to work but now he (drive) ……………………………… to work. 14. Hoa (have) …………………… a lot of friends in Hue. 15. ………… Quan (swim) ……………… now? – No, he (skate) …………………… with his brother in the park. 16. We (play) …………………………… chess at the moment. 17. What time …………… the library (open) ……………………? – It (open) …………………… at 8 a.m every day. 18. His family (travel) ………………………… to Da Nang every summer. 19. My brothers (drink/ not) ……………………………… coffee at the moment. 20. My little sister always (watch) ………………………… TV after dinner.