This is the problem _______ you should pay attention.A.to which B.on whichC.at whichD.which为什么选A?在这句中to起什么作用?

this is a （ ) problem This is not a problem since during the inspection是什么意思, l think this problem is e_______ of the three. so this is not where the problem lies. This is the problem that I confront.对么? The purpose of this problem is a primarily educational.翻译 This problem is very___for her. what is the problem This is the way_____has been used to solve this problem.填什么? 介词或副词填空 This is the way ---- solving the problem. Is this problem ___ the teacher explained last week?加THE呢 Is this problem （ ）the teacher explained yesterday?A、that B、the one justify why this is the person/organization to whom to approach about the problem What do you think is the most criticial problem facing China at this time? 定语从句改错：This is the most difficult maths problem which I have done. This is very easy to work out the math problem.有什么错? This is another way of _____ (work) out the math problem.快 i think it is time for you to be aware of the seriousness of this problem.