Một học sinh đi từ nhà đến trường với tốc độ trung bình 6 km/h. Sau đó học sinh này đi từ trường về nhà theo đường cũ với tốc độ trung bình 4 km/h. Tính tốc độ trung bình của học sinh đó cả đi cả về.

4. Change the following sentences into passive sentences using the words in brackets. a. We sell tickets for all shows at the Box Office. (Tickets for all shows/sell/at the Box Office) _________________________________________________________________________________ b. Thomas Edison invented the electric light bulb. (The electric light bulb/invent/by Thomas Edison) _________________________________________________________________________________ c. Someone painted the office last week. (The office/paint/last week) _________________________________________________________________________________ d. Several people saw the accident. (The accident/see/by several people) _________________________________________________________________________________ e. Where do they make these video recorders? (Where/these video recorders/make) _________________________________________________________________________________

Chép và ghi tên nốt bài tập đọc nhạc TĐN số 6 ( lưu ý : chép cả lời và tên nốt ) chép ra vở

Cho nguyên tố K (Z=19), Ca (Z=20), Al (Z=13), P (Z=15), S(Z=16), Br(Z=35), hãy nêu tính chất hóa học cơ bản của các nguyên tố đó theo các thông tin sau: - Là kim loại hay phi kim? - Hóa trị cao nhất với Oxi?, Hóa trị trong hợp chất với H? - Công thức oxit cao nhất? Công thức hiđroxit? Chúng có tính axit hay bazơ? - Công thức hợp chất với H, chúng tồn tại ở trạng thái gì? ( rắn, lỏng hay khí).

1. Bao said that we should use solar energy , _______________ ? 2. A huge tidal wave hit Anchorage, Alaska, in the1960s, _______________ ? 3. You think secondary students should wear uniforms to school,______________?

Giúp mình với mình đang cần gấp 😭

20. Choose the word whose underlined part is pronounced differently from the rest. A. advice B. machine C. Chinese D. decide 21. Choose the best answer among A, B, C or D to complete the following sentence. They are used _________outdoors and under pressure. A. to work B. to be working C. to working D. worked 22. Choose the underlined word or phrase that is in correct. Did your house built a long time ago? A B C D 23. Choose the best answer among A, B, C or D to complete the following sentence. Do you mind if I turn _________the T.V? I want to watch the news. A. off B. out C. down D. on 24. Choose the sentence which has the same meaning as the given one. She doesn’t go to china with us. A. We wish she goes to China with us. B. We wish she did went to China with us. C. We wish she went to China with us. D. We wish she can go to China with us. 25. Choose the best answer that is made from the given cues. conutries / not / those / many / to / plan / agreed / the / of A. Many of those countries agreed not to the plan. B. Many of those countries not agreed to the plan. C. Not many of those countries agreed to the plan. D. Not of many those countries agreed to the plan. 26. Choose the best answer among A, B, C or D to complete the following sentence. _________him this book if he comes. A. Gave B. Give C. Giving D. Given 27. Choose the underlined word or phrase that is in correct. When she came to my house this morning, I still slept. A B C D 28. Choose the best answer among A, B, C or D to complete the following sentence. She asked me what _________. A. is my name B. my name is C. my name was D. my name 29. Choose the best answer among A, B, C or D to complete the following sentence. - An: “I’ve passed my exam.” - Ba: “_________.” A. Good luck B. It’s nice of you to say so C. That’s a good idea. D. Congratulations! 30. Choose the best answer among A, B, C or D to complete the following sentence. - Mary: “That’s a very nice skirt you are wearing.” - Julia: “_________.” A. That’s nice B. I like it C. That’s all right D. I’m glad you like it

Mn ơi mình cần giúp bài này mn giúp mình với cảm ơn ạ

làm cho mình câu a b trước đã nhé

giúp mình nha, mình cảm ưn nhìu!