Bài 1 cho tam giác ABC có điểm M trên cạnh BC sao cho BC= 4cm. Trên cạnh AC lát điểm N sao cho CN/AN=1/3.chứng minh // với AB Bài 2 cho tam giác ABC vuông tại A có A=9cm, AC=9cm,AC=12cm và đường phân giác giác BC. Tính độ dài DA, DC Giúp mình 2 bài này hen

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• BÀI TẬP TỔNG HỢP NÂNG CAO • Chọn đáp án thích hợp điền vào chỗ trống • You ________________ go to the hairdresser’s. A. should B. will C. shall • It’s incredible that Stuart ________________ run so fast. A. should B. will C. shall • ________________ you have some coffee? She asked us. A. should B. will C. shall • You ________________ read this book, it is worth reading A. should B. will C. shall • She ________________ probably come tomorrow. A. should B. will C. shall • Let’s go for a walk, ________________ we? A. should B. will C. shall • ________________ you tell me where you are from? No I won’t. A. should B. will C. shall • ________________ we go somewhere else? A. should B. will C. shall • Chọn should/ must/ mustn’t/ have to/ don’t have to để điền vào chỗ trống. • I don’t think you ________________ eat so much chocolate. It’s bad for your health. • Children ________________ behave well when they’re in class. • If you drive a car, you ________________ stop at marked crossings. • I think waiters ________________ try to be pleasant with customers. • Some workers ________________ wear hard hats because their jobs are considered dangerous. • If you feel sick, you ________________ stay at home. It’s better for you. • Police officers ________________ wear a uniform. • I ________________ do my homework. My teacher always checks if we have done the exercises. • I ________________ get my hair cut. I don’t like long hair. • We ________________ go home. My mother has told me to arrive at ten o’clock. • I ________________ study hard. I want to pass the exam. • In Spain, children ________________ go to school until they’re 16. • You ________________ phone every day, darling! • You ________________ accept things from strangers! • When you go into a clothes shop, you ________________ have to buy something. You can just look • You ________________ steak things from shops. • Children ________________ pay bills. • Children ________________ eat junk food every day.