air coditions do cause us some environment problems —in fact far more serious _______than cars doa one b ones c it d those答案是b为什么不选those啊?

air coditions do cause us some environment problems —in fact far more serious _______than cars doa one b ones c it d those答案是b为什么不选those啊? cau是什么意思 cau bat khoc nhung chac gi da kho,to day cuoi nhung le do trong tim谁知道这句越语什么意思 Cau'foR是什么意思? why do you d( ) traveling by air DO you feel like breathing fresh air? air air air 越南语 nguyen cau may man Cau You Feel My World what do you thing of traveling by air why do living thing need air food and water do you need everyone______(carry)the air tank for you? Do the well-being in the air program. Do you enjoy breathing fresh air? 如何转换 Do you have an air conditioner?怎么回答 how do feel when you hear of an air disaster