1.-I'mgoingtothepostoffice.-_____you'rethere,canyougetmesomestamps?A.AsB.While正确答案是B,麻烦详细解释一下as和while的区别.2.Ifyouaresenttowork____youarenotusedtothepeople'slifestyle,besuretoadaptyoursel

　　1.-I'mgoingtothepostoffice.

　　-_____you'rethere,canyougetmesomestamps?

　　A.AsB.While

　　正确答案是B,麻烦详细解释一下as和while的区别.

　　2.Ifyouaresenttowork____youarenotusedtothepeople'slifestyle,besuretoadaptyourselftothemassoonaspossible.

　　A.whereB.inwhich

　　麻烦也详解一下这两个词.

　　最好能通俗一点.