The ways ( ) air-conditioners work to "clean" the air can inadvertently cause health problems,too.A.which B.that C.in which D.in that 为什么答案是C而选B却不可以呢?

空中监狱 CON AIR怎么样 空中监狱的英文名“con air”中的“con”是什么意思? 英语翻译Describe two ways of nitrogen is fixed in the air. But the air is more important than we thought in many other ways..本人急啊请大家翻译! 英语翻译Although the Jordanian air quality standards limit particulatematter in the air space,there is no current limitation on con-centration or mass loading of heavy metals due to particulateemissions.The purpose of this study was to quantify t so dark the con of The ways ( ) air-conditioners work to clean the air can inadvertently cause health problems,too.A.which B.that C.in which D.in that 为什么答案是C而选B却不可以呢? 英语serve的意思Although this barbecued meal ,cooked and served in the open air ,isexcellent by itself ,there are two ways by which it might be improved . But air is important in many other ways-ways that are not always widely know意思 in the air on the air in the open air Let the Fresh Air make the air clean flew into the air air the quilt stick in the air the air【】【pollute】 Make The Air