they are still working on it .这个介词on是干什么的

are they still in --(dangerous)? 英语翻译歌名：ListeningThe Used - Listeningyour skin attached this fragile clicheof my broken heart attackyou should swallow your teeth and hang outstay for a whileif your heart's still beating it must be the bloodif your lungs are still worki I have a f________that they are still alive. ______it's late ,they are still working in the office They are looking for work___and still haven't got anything my grandparents are still healthy ,（）they are over eighty years oldmy grandparents are still healthy ,（a_____）they are over eighty years old although they are young,they still have to make many important choices by s_____ Although they are young, they still have to make many important choices by t____ They still have days.They are going to visit ________places of interest. They eat plants but they are still danger.哪个错了? These clothes are no -----------in fashion though they are still new He said,“We are still students.’ 改为间接引语：He said they are still students.为什么“are”不变换成“were”?十万火急ING! If you are like most people ,then chances are you often interrupt others while they are still talkig中文翻译 there are still 还是 there still are 英语翻译前面是They are still working,( ）and going home. 改错：Although it is raining hard,but they are still walking in the rain. Don't part with your illusions.When they are gone you may still exist,but you They are still working ________ the house outside.填什么介词