1、There is no simple answer,______ is often the case in science.2、By 16:30,______ was almost closing time,nearly all the paintings had been sold.为什么第一题不能填which?为什么第二题不能填as?

There is no simple -----(solve)to this problem. there is no simple answer (as)is often the case inscience.为什么不能用where There is not a simple answer there is no simple answer,( )is oftenthe cathere is no simple answer,( )is oftenthe case in science.a.in which case b.in that case c.in what case d.in whose case 英语单选求详细分析 31.There is no simple answer,_____ is often the case in science.A.as B.that C.when D.where there is no point No longer is there There is no way. there is no way there is no There Is No There is no there is no silver there is no wait there is no evidence If there is no There is not a simple answer 什么意思 there is no 和 there is not