cho AB = AC va H la trung diem cua canh BC .chung minh rang AH vuong goc BC

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làm giúp mình bài này với ạ 20 điểm chắc vote 5+ VI. Make questions for the underlined words. ( BÀI NÀY THAY VÌ GACH CHÂN THÌ MÌNH NGOẶC () NHA) 1. Nam is doing (his homework). ..........................................................................................................................? 2. My father traveled to Tokyo (by plane). ..........................................................................................................................? 3. Hoa and Mai will come here tomorrow evening. ..........................................................................................................................? 4. My mother was in (Da Nang) last week. ..........................................................................................................................? 5. Lan left home (at 6.30) yesterday morning. ..........................................................................................................................? 6. Hoa bought (a cap and a poster) at the souvenir shop. ..........................................................................................................................? 7. (Mr. Pike) teaches me English this year. ..........................................................................................................................? 8. My new skirt is (black). ..........................................................................................................................? 9. Mai will stay in Hue for five days. ..........................................................................................................................? 10. Nam went to Hanoi with his family on summer vacation. ..........................................................................................................................?

Exercise 1: Thành lập dạng quá khứ đơn cho những động từ sau đây. live - carry - buy - go - read - arrive - start - study - have - tell – give - meet - write - come - build - know - believe – play - try - send - speak - tell - take - find - pay – teach - permit - be - begin - bring - stop - sit - watch - can - work - leave - sing - break - make- hold - hear - do - learn - lose - Exercise 2. Choose the correct answer. 1. They __________ the bus yesterday. A. don’t catch B. weren’t catch C. didn’t catch D. not catch 2. My sister __________ home late last night. A. comes B. come C. came D. was come 3. My father __________ tired when I __________ home. A. was – got B. is – get C. was – getted D. were – got 4. What __________ you __________ two days ago? A. do – do B. did – did C. do – did D. did – do 5. Where __________ your family _______ on the summer holiday last year? A. do – go B. does – go C. did – go D. did – went 6. When I (meet) ………….Jane last year, she (be)………… a student. 7.They (get) …………married when they (be)………….. in Chicago. 8. She (have)…………… a fight with her boyfriend last week. 9. He (study) …………..Spanish when he was at University. 10. Last week, my uncle (drive)…………….. me to the school by his new car. 11. She (not/take) ………………….part in the contest three years ago. 12. She (not/ do) ……………….her homework before going to class yesterday. 13. Our cat (catch) …………………a big mouse this morning. 14. In 2001 our class (make)…………………….. a trip to Norwich. 15. (you/have)…………………………… a nice weeken in Twain? Exercise 3: Complete the sentences with the words given ( Hoàn thành câu với từ gợi ý). 1. They/ watch / good football match / TV last night. ……………………………………………………………………………………… 2. Peter /send / letter /Marry/ yesterday morning. ………………………………………………………………………………………3. It / humid / Lang Son / last week. ……………………………………………………………………………………… 4. David /visit/ Halong Bay/ 2 years ago ? ……………………………………………………………………………………… 5. How long/ it/ take/you/ draw/ this picture?. ………………………………………………………………………………………