Please fill in the blaanks according what you hear. 请根据所听内容填空。 1) __________ is a big problem. Many places on 2) __________ are not clean. There is 3) __________ on the land and in the water. The air is 4) __________, too. People, cars, 5) __________ and many other things 6) __________ our world. How can you help? You can help keep our air 7) __________. Walk, 8) __________ a bike, or take a bus. Always put your trash in a trash 2) __________. Look for trash on the ground and 10) __________ it up. Help keep our land clean./module/audioplay.html?objectid=6d6b863db9ecb843d8ea092f9ace4b58
Please fill in the blaanks according what you hear. 请根据所听内容填空。 1) __________ is a big problem. Many places on 2) __________ are not clean. There is 3) __________ on the land and in the water. The air is 4) __________, too. People, cars, 5) __________ and many other things 6) __________ our world. How can you help? You can help keep our air 7) __________. Walk, 8) __________ a bike, or take a bus. Always put your trash in a trash 2) __________. Look for trash on the ground and 10) __________ it up. Help keep our land clean./module/audioplay.html?objectid=6d6b863db9ecb843d8ea092f9ace4b58
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