1. In most of the __________________ companies, employees are required to use English competently. (NATION) 2. He has completed three English courses at this center, but there hasn’t been any __________________ in his English level. (IMPROVE) 3. It is a __________________ that students must have at least 6.0 IELTS to take part in that English speaking contest. (REQUIRE) 4. She prefers a book written only in English to a _________ one. (LINGUAL) 5. She __________________ the word, so her foreign friend couldn’t understand what she meant. (PRONOUNCE) 6. Excessive consumption of fast food increases the risk of ____________. (OBESE) 7. People who are interested in exploring new things always want to take _________ trips. (ADVENTURE) 8. If you are going to Son Doong Cave, you really need to book a __________________ tour because you will easily get lost there. (GUIDE) 9. In some Asian countries such as India, Pakistan, the Philippines and Singapore, English is used as the __________________ language. (OFFICE) 10. The variety of dialects and accents in English is one of the biggest challenges to _______ English speakers. (NATIVE) 11. Oranges, sunflower seeds and salmon are believed to support blood __________in our body. (CIRCULATE) 12. Although canned food is convenient, it is not good for your health because it contains __________________. (PRESERVE) 13. Most of visitors can’t help being amazed by the __________________ of Edinburgh Castle. (MAGNIFY) 14.The heavy rains cause river levels to rise and make the cave largely ____________. (ACCESS) 15.My English teacher told me that some sentences in my essays were not ___________ correct. (GRAMMAR) 16. English has grown from a language of few speakers to become the dominant language of international __________________ . (COMMUNICATE) 17. Until the 1600s, English was, for the most part,__________________ only in England and had not extended even as far as Wales, Scotland, or Ireland. (SPEAK) 18. English began to spread around the globes as a result of __________________ , trade (including slave trade), colonization, and missionary work. (EXPLORE) 19. Thus, small enclaves of English speakers became established and grew in __________________ parts of the world. (VARY) 20. Two-thirds of the world’s science writing is in English, and English is the main language of technology,__________________, media, international airports, and air traffic controllers. (ADVERTISE) 60 điểm GIÚP VỚIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

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môi trường địa trung hải ở châu phi có đặc điểm nào

Tính giá trị của biểu thức (2ab^2)chia c với a=4,b=-6,c=12

Hỗn hợp 2 ankin đồng đẳng kế tiếp nhau đốt cháy hoàn toàn hỗn hợp thu được 1,056 g CO2 và 0,27 g H2O tìm công thức phân tử của 2 ankin

Tìm hai số a và b biết : a, a + b = 15 và a*b = 54 b, a - b = 5 và a*b = 24

Giúp e lm bài này mới tối r phải nộp rồi Mời thiên tài vào giúp

Một quả bóng có khối lượng 400g và động năng 20 J . Khi đó vận tốc của nó là

1, chứng minh pt sau có ít nhất 2 nghiệm: 2x³ -10x -7=0 2, chứng minh pt sau luôn có nghiệm âm: x³ + x + 1=0 3, chứng minh pt sau có ít nhất 3 nghiệm nằm trong khoảng (-2;5) x^5 - 3x^4 + 5x - 2 =0