giúp mình bài 3 nha mng thx nhiều ạ ( 50 điểm )

Giúp mình 4 câu này với ạ, giải thích rõ ràng nhé

IV.Choose the best answer. (A , B, C or D ) 15. It is hard to explain …..the phone. A. in B. at C. on D. of 16. Tet is the most important festival in Viet Nam;………….,most Viet Nam return home for Tet. A. but B. therefore C. however D. otherwise 17.We don’t have many carnivals in Viet Nam; …………….we have many traditional festivals. A. also B. But C. moreover D. nevertheless 18.Bin loves ……..Trung cakes A. making B. makeing C. make D. made 19. We want to reduce pollution but we also want to enjoy convenience that .............science and technology supply us. A. a B. an C. the D. no article 20. The cost of …….is very high in the big city. A. live B. lived C. lives D. living 21.I stopped ……my book and went to bed A. to read B. reading C. read D. reads 22.Yoga helps us learn ……..to co-ordinate breathing and movement. A. What B. When C. Why D. How 23………should children do yoga too? A. Why B. When C. What D. How 24. Don’t worry. It is …….to travel to that village even at night. A. safe B. unsafe C. difficult D. inconvenience 25. We have to …..our shoes when we go inside a pagoda. A. take off B. give off C. turn off D. put on 26. Would you like to go …..a walk ….. the park this afternoon. A. to/at B. for/at D. to/in D. for /in 27.The bus was very ……this morning. We can’t go to the church. A. crowed B. crowded C. full D. busy

Giúp hộ em câu này thank Phân tích đa thức thành nhân tử

Mang làm giúp mình câu d,e,f ạ Học câu nào trong 3 câu CX đc Đề bài là:tìm y ∈ Q,biết

Câu 3 Trên cùng một nửa mặt phẳng bờ chứa tia Ox vẽ các tia Oy, Om, On sao choxoy=50độ ,xom=90 độ ,xon=130 độ a) Tính số đo góc yOm, số đo góc mOn và nêu nhận xét b) Vẽ tia Ot là tia phân giác của góc xOy rồi tính góc mOt?

Giúp em phần d bài 11 và B D bài 12 nhé ạ Em cảm ơn nhiều

IV.Choose the best answer. (A , B, C or D ) (1) 1. I like ___ back my home village on holiday. A. comes B. come C. came D. coming 2. If the factory ________________ dumping poison into the lake, all the fish and other aquatic animals will die. A. continues B. to continue C. continued D. will continue 3.Water ___ in the lake has made the fish die. A. pollution B. pollute C. polluted D. polluting 4. Mi and Nick like ___ back Mi’s home village on holiday. A. comes B. come C. came D. coming 5. If the factory continues dumping poison into the lake, all the fish and other aquatic animals _____. A. die B. to die C. dead D. will die 6. Water pollution is the _____ in the lake has made the fish die. A. contaminating B. contaminate C. contaminated D. contamination 7. If we ______ water carefully, more people will have fresh water. A. will use B. would use C. using D. use 8. If the factory continues dumping poison ___ the lake, all the fish and other aquatic animals will die. A. into B. to C. about D. in 9. If the factory ____ dumping poison into the lake, all the fish and other aquatic animals will die. A. continues B. to continue C. continued D. will continue 10.Water ___ in the lake has made the fish die. A. pollution B. pollute C. polluted D. polluting 11.If the air wasn’tdirty, I ___ so much.A. wouldn’t sneeze B. sneeze C. would sneeze D. to sneeze 12. If I were you , I ___ that car . A. would buy B. buy C. bought D. buying 13. If we recycle more , we ___ the Earth.A. help B. would help C. helping D. will help 14. ……… you are Vietnamese, you should know the story of Trung cakes and day cakes A. When B. If C. Although D. However

Mn ơi giúp mik vs. Mik đang cần gấp. Cảm ơn mn trc ạ

Giải giúp mình bài 6 với KHHH là kí hiệu hóa học NTHH là nguyên tố hóa học