13. Engineers________the finished bionic contact lenses on rabbits for up to twenty minutes. A. have yet tested B. have already tested C. have performed D. have done 15. Wearable sensors, such as the Fitbit, Nike FuelBand and Jawbone UP,________the most important part of the fitness world for the last few years. (Giải + cấu trúc câu) A. become B. becomes C. have become D. has become

tính hợp lí d) 34.37 + 74.13+47.60 +120.8 dấu . là dấu nhaanh cho mấy bạn ko bt ai là đúng và nhanh hơn tui cho tlhn

Of course, you are Lisa, aren’t you? I_____(recognize) you now. đáp án là recognize , các bạn có thể giải thích cho mình tạo sao ko phải là am recognizing ko ?

dịch cái này sang Tiếng Việt giúp mình nha, ngắn thôi=))

Làm giúp em , ko cần giải thích đâu xin cảm ơn

I- Choose the best answer: 1. I can't reach the phone because I _____ a bath. A. am having B. have C. was having D. be having 2. Don't turn off the light. I _____ a report now. A. read B. is reading C. am reading D. be reading 3. He _____ his house at seven a.m each day. A. left B. leaves C. leave D. is leaving 4. When she _____, I was reading upstairs. A. was coming B. is coming C. came D. comes 5. My mother is cooking now. She always _____ dinner for my family. A. cooks B. cooked C. cooking D. is cooking 6. I _____ in England for a few weeks now. A. has been staying B. am staying C. have been staying D. stay 7. It _____ hard all day last Sunday. A. rained B. was raining C. has rained D. has been raining 8. If he knew the facts, he _____ us what to do. A. told B. will tell C. would tell D. tells 9. Let's hurry up! We must finish _____ the wall before ten o'clock this morning. A. to paint B. painting C. paint D. painted 10. If you _____ work hard, you'll fail the exam. A. not work B. don't work C. won't work D. work 11.I must say that my great passion in my life is _____. A. studied B. to studying C. studying D. studies 12. He'd rather _____ books _____ watch TV. A. read/ than B. read/ to C. reading/ to D. reading/ than 13. Would you mind _____ me to take these chairs away. A. help B. to help C. helped D. helping 14. Mr. Kent has been out of _____ for a year. A. a work B. the work C. work D. works 15. I am sorry I can't help you now. I'm busy _____ my lesson. A. to B. X C. with D. for 16. She is very _____ up with doing the same thing everyday. A. bored B. tied C. hate D. fed 17. she doesn't enjoy looking _____ the children. A. for B. in C. after D. at 18. The long walk is tiring. We are very_____of the long walk A. bored B. fed C. tired D. hated 19. His friends are surprised _____ his success. A. in B. with C. at D. for 20. He was born _____ 2nd May 1987. A. in B. on C. at D. since 21. She has been teaching _____ school for ten years. A. at B. in C. on D. with 22. My father has been working in a bank _____ we moved here. A. for B. during C. since D. in 23. I stopped in Maid Stone _____ my sister owns a shop. A. which B. who C. where D. that 24. Several guests _____ cars were parked outside were questioned by the police. A. who B. which C. that D. whose 25. Picasso, _____ works inspired many artists, lived until he was a ripe old age. A. who B. that C. whose D. which 26. He _____ to stop drinking by the doctor. A. was advised B. advised C. is advised D. be advised 27. A lot of new machines _____ by the farm. A. was bought B. has been bought C. have been bought D. have bought 28. The price of wheat exports _____ by the government. A. is increasing B. are increased C. will be increased D. have been increased 29. We _____ by her because she doesn't feel well. A. can't help B. can't be helping C. can't are helped D. can't be helped 30. His success is _____. A. surprise B. surprised C. surprising D. surprisingly 31. We should _____ this road for better use. A. wide B. to widen C. width D. widen 32. He finally _____ in finding a new job. A. success B. succeeded C. successful D. successive 33. There is a _____ between the North and the South. A. different B. differ C. differently D. difference 34. The North can be characterized as _____, cooler, hillier. A. more industry B. industrial C. more industrial D. more industrially 35. People in the North say they work much _____ and speak more directly and honestly. A. more hard B. more hardly C. more harder D. harder 36. This park is very _____ to visitors. A. attract B. attraction C. attractive D. attracted 37. Here, in fine weather, can be seen hundreds of _____ people who have escaped for while from the noise and bustle of the town. A. luck B. unlucky C. lucky D. luckily 38. In the world today, there are 5000 to 6000 living languages, of which English is by far the _____ used. A. widely B. most widely C. most wide D. widest 39. He went to work as a driver on the Italian front where he was _____ wounded. A. bad B. badly C. worse D. badder 40. I liked the T- shirt _____ he was wearing. A. what B. which C. who D. whose

1^1000 có bằng 1^10003884 ko và giải thích vì sao

giải pt: 1-sin^8x - cos^2x=2+2.cos x giúp mk với ạ

Thuyết minh về tượng đài trần hưng đạo

1.Phân tích mối quan hệ giữa dân tộc với tôn giáo ở Việt Nam và ảnh hưởng của mối quan hệ đó đến sự ổn định chính trị- xã hội của đất nước, đến độc lập, chủ quyền của tổ quốc. 2.Phân tích quan điểm của Chủ Nghĩa Mác Lê Nin về dân tộc và giải quyết vấn đề dân tộc trong Cách Mạng Xã Hội Chủ Nghĩa help me