Has it beensnowing for a long time?

Has it beensnowing for a long time? It ___that he has been ill for a long time he has promised to do it for a long time ,( )he has done not it has a long time that It has been raining for a long time.Can you tell me when it It __that he has been ill for a long time.a.seems b.looks c. It -- that he has been ill for a long time 为什么选择A呢 Aseems B Why someone cannot fall asleep for a long time while it has It -- that he has been ill for a long time Aseems B looksClo It has belonged to our family for a long time.我们家有这件乐器已经很久了. it has been the case for a long time that...这句话正确吗? thought about it for a long time