Are we clear?

Are we clear? understand 和 are we clear的区别? We are clear about to dialogue是什么意思吖` ifwe are () that the road is clear ,we can ()the road We clear too much land. Are you clear what I 怎么翻译这句话it's clear that now we are obliged to reduce the quality of mentioned goods 不可数名词：例river is clear还是river are clear? We can't see the notes________(clear) clear clear clear From the ______ on his face ,we are all clear that he is worried about the safety of his son.(anxious) （ ）we are in need of money is quite clear to allA.what B.that C.if D.whatever应该选哪一个,为什么, Sometimes we know we want something but are not clear exactly what.这句的what But we must all still dream,这句话怎么翻译,要点在哪里? 塔台对战机说：“you are clear for take off”,“you are clear”怎么讲? 西方哲学的 T OR F Descartes is the most representative philosopher of empiricism.Illusions and hallucinations are evidences of the fact that sometimes we are deceived by our senses.Descartes claims that clear and distinct ideas are contingent tr we are