TỪ NỐI – Điền từ nối “ALTHOUGH, IN SPITE, BUT, HOWEVER, BECAUSE, SO, THEREFORE” 17. Bob is interested in making origami ___________________ it is hard. 18. Nomadic children are brave ___________________ they can ride horses at a very young age. 19. I think a nomadic life is exciting ___________________ of many difficulties. 20. Cholera is spreading in the area ___________________ water in lakes and rivers is contaminated. 21. The environment is important for our life _________________ we don’t protect it in the right way. 22. Chemical fertilizers are not good for the soil. ________________, farmers are still overusing them. 23. Our air is full of pollutants. ___________________, our children are having breathing diseases mình đang k bt làm bài này giúp mình với please