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vokha7439
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Tổng 5^45.12.13+7^30.6.11 là số nguyên tố hay hợp số? (giải thích)
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Exercise 5. Write the second sentence so that it has the same meaning as the first one. 1. I’m interested in reading books. -> I enjoy ……………………………………………………………………. 2. He likes collecting stamps. -> His favourite ………………………………………………………… 3. Many young people love playing football. -> Many young people are fond………………………………………………………… 4. Is your mother keen on growing roses? -> Does …………………………………………………………? 5. This is the first time I have eaten such a delicious meal. ->I haven't.................................................................................................. 6. We haven't returned to our hometown for five years. -> The last time ………………………………………………………… 7. We have learnt English for 5 years. ->We started …………………………………………… 8. When did you last see her? -> How long …………………………………………………………? 9. The last time I went to Hanoi was over four years ago. -> I haven’t ………………………………………………………… 10. She has worked at this company for ten years. -> She started …………………………………………………………

giúp mh 20 câu này với ạ Choose the word whose underlined part is pronounced differently from the others by circling its corresponding letter A, B , C or D. 1. A. traveled  B. stared  C. landed  D. seemed 2. A. watched B. promoted C. invited D. decided 3. A. proofs B. books C. points D. days 4. A. pens B. closets C. sweets D. lamps 5. A. chemistry B. prepare C. receive D. eliminate 6. A. donate B. passionate C. late D. educate Choose the best answer to complete the following sentences by circling A, B, C or D. 7. He _____________the piano everyday. A. practise     B. practises     C. is practising      D. practising 8. Mr Minh has decided ……………………aromatherapy to treat his backache. A. using B. use C. to use D. to be used 9. We ____ a contract two years ago and it is still valid. A. have sign B. have signed C. haven't signed D. signed 10. She ____ for this company for 6 years. A. has worked B. is working C. was working D. worked 11. A: “Thank you very much for helping the disadvantaged children here!” B: “ ……” A. What a pity! B. It is our pleasure. C. Sorry, we do not know. D. That is nice of you! 12. Tom:“What do you think of your new laptop?” Mary : “ …………” A. I always keep it B. I’d love to C. It’s fantastic. D. Sounds great 13. Now I wish I could ____ a medical career to become a doctor. A. pursuing B. be pursuing C. be pursued D. pursue 14. Hurry up, Linh. Other friends ____ for us. A. are waiting B. waits C. wait D. is waiting 15. They visit a retirement home and ____ time doing fun activities with the elderly who lack immediate family. A. spend B. lose C. waste D. consume 16. For a cleaner and greener community, everyone should ____ the amount of trash and take care of our environment. A. increase B. reduce C. contribute D. ignore Circle the letter A, B, C, or D on your answer to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. 17. Young people are now getting more and more concerned about environmental problems. A. worried B. nervous C. hopeless D. uneasy 18. Many people who do volunteer work think they are more fortunate than others. A. lucky B. blessed C. unlucky D. uncomfortable 19. A digital camera is more economical than a film camera since you don’t have to buy rolls of films. A. better B. cheaper C. safer D. stronger 20. Most employers prefer male workers to female ones. A. want B. compliment C. care about D. favour

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