1) Planting trees is good because.... a) Trees make the soil dirty b) Trees make the air fresh c) Trees create smoke d) Trees make people sick 2) What should we do with trash? a) Throw it anywhere b) Burn it in the street c) Put it in the trash bin d) Leave it in the river 3) Which of these is NOT pollution? a) Clean air b) Dirty water c) Smoke from cars d) Trash on land 4) The effect of air pollution is … a) We breathe fresh air b) The sky looks blue c) People may get lung disease d) We feel strong 5) What happens if there is too much smoke in the air? a) We can breathe easily b) The air becomes dirty c) The sky is clear d) The plants grow better 6) What is environment? a) Only plants and soil b) Only animals and humans c) Everything around us d) Only buildings 7) Which is NOT part of the environment? a) Trees b) Animals c) Air d) Toys 8) Why is the environment important? a) Because it gives us food, water, and air b) Because it looks pretty only c) Because it is always dirty d) Because it is not useful 9) Which place is clean? a) Classroom with trash on the floor b) Garden full of flowers c) Street full of plastic bottles d) River with dirty water 10) Which habit keeps the classroom clean? a) Throw trash on the floor b) Sweeping (menyapu) the floor c) Spill food everywhere d) Play with dirt in class 11) What can happen if we live in a dirty place? a) We become healthier b) We may get sick c) We feel happy d) We can study well 12) Clean water is … a) Safe to drink b) Dirty and smelly c) Full of trash d) Brown and muddy 13) A dirty river can cause … a) Water to be fresh b) Fish to die c) People to be healthy d) Air to be clean 14) Which activity makes environment dirty? a) Planting flowers b) Sweeping the yard c) Throwing trash into the river d) Washing hands 15) Which one is part of the environment? a) Books b) Air c) Pencils d) Toys 16) Which one shows environment around the school? a) Students, classrooms, and trees b) Only books and pencils c) Only computers d) Only teachers 17) What should we do to keep the bathroom clean? a) Leave water on the floor b) Clean it regularly c) throw trash in the corner d) Make it dirty 18) Which statement shows a clean environment? a) River full of bottles b) Playground full of waste c) Market with dirty water d) Street with many trash bins 19) A dirty classroom makes students … a) Feel uncomfortable b) Feel healthy c) Feel happy d) Study well 20) Clean air is important for … a) Sleeping only b) Playing toys c) Breathing d) Watching TV 21) If we want to keep the garden clean, we should … a) Throw plastic bottles on the grass b) Water the plants and pick up trash c) Step on the flowers d) Leave food waste on the soil 22) Which one can cause air pollution? a) Planting trees b) Using bicycle c) Smoke from factory d) Playing football 23) Which is the effect of soil pollution? a) Soil becomes healthy b) Plants die c) Air is fresh d) Water is clean 24) Throwing plastic bottles into the river is an example of … a) Water pollution b) Air pollution c) Soil pollution d) No pollution 25) Which pollution makes people difficult to breathe? a) Water pollution b) Soil pollution c) Air pollution d) Noise pollution 26) Planting trees is useful because … a) It makes air dirty b) It makes soil polluted c) It kills animals d) It gives us fresh air 27) To keep the river clean, we must … a) Do not throw trash into the river b) Throw leftover food in it c) Wash motorbikes in the river d) Put dirty clothes in it 28) Which one is the best way to reduce air pollution? a) Use car every day b) Ride bicycle or walk c) Burn leaves d) Throw plastic in the garden 29) Which one is a bad habit? a) Throwing trash everywhere b) Planting trees c) Using bicycle d) Recycling plastic 30) What is pollution? a) Keeping the environment clean b) Planting more trees c) Dirty things that make the environment bad d) Playing in the park

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