1.Trên cùng 1 nửa mặt phẳng có bờ chứa tia Oa vẽ 2 tia Ob và Oc sao cho góc aOb= $70^{0}$ ,góc aOc= $125^{0}$ a)Tính góc bOc. b)Gọi Od là tia đối của tia Oa.Tính số đo góc bOc. c)Chứng tỏ Oc là tia phân giác của góc bOc.

8888888888888888 Đề ơn câu trước ạ

: Choose the letter A, B, C or D to indicate the underlined part that needs correction in each of the following sentences 1. A new factory will be build in my neighborhood. A. A B. will be C. build D. in 2. Non-renewable energy sources are going to run off soon. A. Non-renewable B. sources C. are D. run off 3. He will be worked on the report at this time tomorrow. A. will be worked B. on C. at D. tomorrow 4. Bicycles are cheap and environmental friendly. A. are B. cheap C. environmental D. friendly 5. I have never read this story ago. A. never B. read C. story D. ago 6. These children often go to school by foot. A. These B. often C. go D. by

Để thêm một hàng nằm bên trên cửa hàng chứa ô có con trỏ soạn thảo ta được thực hiện lệnh nào trong các lệnh

Cho tứ giác ABCD với AD = BC Gọi M N P Q là trung điểm các đoạn thẳng AB BC CD DA. chứng minh MP=NQ

Làm hộ tôi bài 1,cảm ơn rất nhiều

Mọi ng giúp mik giải bài này với . Mik đag cần gấp

77777777777777777 25. That There This It Đề ở câu trước an

1. Robert________ tomorrow morning on the 10:30 train. a. arrived b. is arriving c. has arrived d. would arrive 2. Look! The bus________ a. left b. has left c. leaves d. is leaving 3. Mike________ one hour ago. a. phoned b. was phoning c. had phoned d. has phoned 4. I shall be glad when he________ a. had gone b. did go c. went d. had gone 5. Ask her to come ad see me when she ________ her work. a. finish b. has finished c. finished d. finishing 6. After you finish your work, you________ a break. a. should take b. have taken c. might have taken d. takes 7. Oil________ if you pour it on water a. floated b. floats c. will be floated d. float 8. When he returned home, he found the door________. a. unlocking b. unlocked c. to be unlocked d. have unlocked 9. That dancing club________ north of the city a. lays b. lies c. locates d. lain 10. Almost everyone________ for home by the time we arrived. a. leave b. left c. leaves d. had left 11. By the age of 25, he ________ two famous novels. a. wrote b. writes c. has written d. had written 12. While her husband was in the army, Janet________ to him twice a week. a. was writing b. wrote c. was written d. had written 13. I couldn't cut the grass because the machine_______ a few days previously. a. broken down b. has been broken c. had broke down d. breaks down 14. We ________English this time last week. a. learned b. were learning c. have learned d. had learned 15. Is it raining? - No, it isn't but the ground is wet. It________ a. rained b. had rained c. has rained d. has been raining 16. Her family________ to America before 1975. a. went b. have gone c. had gone d. would go 17. When I arrived at the party, Martha________ home already. a. went b. have gone c. had gone d. would go 18. Henry________ for 10 years when he finally gave it up. a. has smoked b. has been smokingc. had smoked d. had been smoking' 19. Yesterday morning I got up and looked out of the window. The sun was shinning but the ground was very wet. It________ a. rained b. has been rainingc. had rained d. had been raining 20. We ________ our examination next month. a. have b. shall have c. will have had d. will be having 21. Look that those black clouds! It________ a. is going to rain b. will rain c. would rain d. can rain 22. We________ English this time next Monday. a. learn b. will learn c. are learning d. will be learning 23. We________ this course before the final examination. a. are going to finish b. have finished c. will finish d. will have finished 24. I________ "Chicken soup for the soul" but I haven’t finished it yet. a. read b. am reading c. have been reading d. was reading 25. Alan took a photograph of Sandra while she________ a. didn't look b. wasn't looking c. hasn't looked d.. hadn't looked 26. I ________ my key. Can you help me look for it? a. lose b. lost c. had lost d. have lost 27. Last night Tine________ in bed when suddenly she heard a scream. a. read b. was reading c. had read d. had read 28. We________ a part next week. Would you like to come?

Giúp mình bài 2.2 ạ cảm ơn rất nhiều