Câu 25. Air __________ is a serious problem that our city is facing due to our own activities. A. pollute B. polluted C. pollution D. pollutant Câu 26. In my family, my father always ______ the rubbish out after dinner. A. puts B. gives C. picks D. gets Câu 27. A __________ bulb produces light and heat at the same time so it is said to be a waste of energy. A. lamp B. light C. electric D. solar Câu 28. __________ bags should be banned because the use of them pollutes our land and water seriously. A. glass B. wooden C. garment D. plastic Câu 29. Some people treat garbage by burning them, this will produce a lot of harmful __________. A. smoke B. water C. fire D. steam Câu 30. I and my classmates are __________ a survey on how much waste is produced at our school every day. A. researching B. getting C. taking D. doing Câu 31. The increase of global temperature has caused the sea __________to rise; this is very dangerous for our human life. A. degree B. side C. level D. rank