mọi người giúp em với ạ em cảm ơn

Giúp em với đi ạ em đang rất gấp

Giải thích giúp mình câu này với ạ

Giải giùm em câu 26!!!!!!!!!!!!

I.Correct the mistakes. 1. You can go out until you finish eating. 2. Dad, must I borrow the car, please? 3. I haven’t be able to write the letter yet. 4. He can’t run long distances when he was a boy. 5. You mustn’t wake up early tomorrow. It’s a holiday. 6. He drives a Porsche. He must be poor.

f(x)=ax+b Biết f(1)=7/2;f(-1)=-5/2 A,f(x)=3x+7/2 b,f(x)=3x+1/2 c,f(x)=2x+1/2 d.f(x)=x+1/2

1. I/wash/my/hair. => ..................................................................................................... 2. It/snow. => ...................................................................................................... 3. They/sit/on/the/bench. => ............................................................................................ 4. It/rain/very/hard. => .............................................................................................. 5. She/learn/English. => .................................................................................................. 6. He/listen/to/the/radio. => .................................................................................................. 7. We/smoke/in/the/class. => ............................................................................................ 8. I/read/a/newspaper. . => ............................................................................................ 9. You/watch/T.V? => ............................................................................................ 10. What/you/do? => ............................................................................................ 11. What/Sam/and/Anne/do? => ............................................................................................ 12. It/rain/? => ............................................................................................ 13. That/clock/work? => ............................................................................................ 14. You/write/a/letter. => ............................................................................................ 15. Why/you/run/? => ............................................................................................

bài 1: cho tam giác ABC vuông tại A (AB<AC), đường cao AH. Từ H kẻ HM vuông góc với AB (M thuộc AB) và HN vuông góc với AC (N thuộc AC) a, chứng minh : tam giác AHM~ tam giác ABH b, chứng minh: AH²=AN.AC bài 2 cho tam giác nhọn ABC. Trên cạnh AB lấy điểm D không trùng với A, B. Qua D kẻ đường thẳng song song với BC cắt AC ở E.Qua C kẻ đường thẳng song song với AB cắt DE tại F nối BF cắt AC tại H. chứng minh a, tam giác ABC~ tam giác CFE b, HE/ HC=EF/DF

I.Fill in the gaps with must or can’t. 1.A: Wow! Look at that man in the beautiful car. B: Yes, he … be very rich. 2.A: I passed my exam! B: Congratulations. You … be very happy. 3.A: Aunt Sheila’s dog died. B: Oh no. She … be very sad. 4. A: That woman always wears smart clothes and lots of jewellery. B: I know. She … be poor. 5.A: I’ve been working all day without a break. B: Sit down, you … be really tired. 6. A: I’ve finished tidying my room. I’m ready to leave now. B: You … be ready so soon! You only started 10 minutes ago!

PHONETICS I. Choose the words whose underlined part is pronounced differently from that of the others in each group 1. A. brown B. now C. bowl D. how 2. A. packet B. egg C. lettuce D. lemon 3. A. chest B. lunch C. bench D. schools 4. A. lettuce B. tube C. music D. student 5. A. noodles B. shoulders C. packets D. tomatoes 6. A. mind B. climb C. exciting D. destination 7. A. sugar B. sorry C. seaside D. summer 8. A. busy B. why C. history D. family 9. A. page B. village C. luggage D. heritage 10. A. what B. which C. where D. who 11. A. afternoon B. can C. lack D. animal 12. A. paper B. way C. prepare D. later 13. A. party B. glass C. plant D. plastic 14. A. happy B. match C. package D. save 15. A. swap B. vase C. watch D. want 16. A. recycle B. environment C. charity D. invite 17. A. paper B. bag C. plastic D. natural 18. A. cousin B. cycle C. encourage D. container 19. A.polluted B. prepared C. recycled D. watered 20. A. benches B. boxes C. fridges D. arms