Giúp em nhanh với ạ , em cần gấp trong 15p ạ

Bài 1 : giải phương trình 3$\sqrt{x+34}$ - 3$\sqrt{x-3}$ = 1 $\frac{1}{2}$ $\sqrt{x-1}$ - $\frac{9}{2}$ $\sqrt{x-1}$ + 3$\sqrt{x-1}$ = -17

III-Read the passage and do the task below: There are at least 2,000 different languages in the world. Of all these languages, English is the most widely used. It is used by business people, airline pilots and sea captains all over the world. It is also the first language in sports and science. So it is very important to learn English. Chinese is also an important language because it has the greatest number of speakers. There are not only over one billion people living in China today, but also many Chinese people living outside China. Chinese is widely spoken in many parts of Asia and Africa. Russian is spoken in both Europe and Asia. French is widely understood in Europe and in parts of Canada, Africa and Asia. From more than 2,000 languages, the United Nations has chosen six of them for business. They are Chinese, Arabic, English, French, Russian and Spain. 1. How many languages are there in the world? A. less than 2,000 B. more than 2,000 C. more than 2,00 D. 2,000 2. What is the first language in sports and science? A. Chinese B. French C. Russian D. English 3. What language has the greatest number of speakers? A. Chinese B. English C. French D. Russian 4. What languages are both spoken in Europe? A. English-French B. Russian-French C. Chinese-Spain D. English-Russian 5. What languages are chosen for business by United Nations? A. Arabic-Chinese B. English-French C. Russian-Spanish D. A,B,C are correct 6. From how many languages has the United Nations chosen the languages for business? A. 5,000 B. 3,500 C. 2,000 D. 1,500

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II-Choose the best answer to complete the following sentences: 1. She asked him where he _________ from. A. is B. was C. were D. has been 2. She broke the vase because she was ___________. A. careless B. careful C. carefully D. carelessly 3. It’s very kind ___________ you to say so! A. of B. in C. to D. with 4. She has come here ___________ yesterday. A. since B. for C. on D. in 5. The car ___________ he has just bought is very expensive. A. who B. which C. whom D. whose 6. There are many ___________throughout the year. A. celebrates B. celebrations C. celebrating D. celebrateds 7. Peter ___________ his test yet. A. isn’t finishing B. won’t finish C. doesn’t finish D. hasn’t finished 8. He suggests ___________ to the movies tonight. A. go B. going C. went D. to go 9. I can’t hear what you are saying. Can you ___________ the radio? A. turn up B. turn off C. turn on D. turn over 10. They ___________ go to Nha Trang in the summer. A. use B. are used C. are used to D. used to 11. If you want to get good grades, you ___________ revise your lessons well. A. have B. must C. can D. will 12.You walk to school, ___________? A. do you B. don’t you C. haven’t you D. won’t you 13. She suggested _____________ a quiet Sunday at home. A. to have B. have C. should have D. having 14. Cheese ___________ from milk. A. made B. makes C. is made D. was made 15. She loves ___________ stamps. A. collect B. collects C. collecting D. to collecting 16. A large number of people were killed _________the earthquake occurred in Tokyo and Yokohama. A. where B. why C. when D. that 17. Her son was seriously ill. ___________, she has given up working to look after him. A. Because B. Because of C. Since D. Therefore 18. Our oceans are extremely ___________ because every year ships drop a great number of garbage into the sea. A. pollute B. polluted C. pollution D. polluting 19. Let’s go dancing , ___________? A. shall we B. can we C. do we D. should we 20. Computer is one of the most important ___________ of the 20th century. A. inventions B. invent C. inventor D. to invent

giúp em bài này với ạ ( hứa sẽ vote đủ )

Đề là đặt câu hỏi cho từ gạch chân nha mn . Nhanh lên giùm mình nha, khoảng trước 9h ạ

Cho em hỏi bài 3 vs ạ.Câu này a i nhanh thì dc vote 5 sao ạ.Em cảm ơn

Giúp mk bài 12 từ câu i đến câu p với ạ

Cách viết dấu chấm than và dấu ngoặc đơn. Trên [laptop win 7]