有关高二英语语法thetwostrangerstalkedasifthey-------friendsforyearsAwereBwouldbeChavebeenDhadbeen选哪一个?如果选hadbeen是由于前面有“talked"吗?然而又有书上说虚拟语气从句的时态与主句没

　　有关高二英语语法

　　thetwostrangerstalkedasifthey-------friendsforyears

　　AwereBwouldbeChavebeenDhadbeen

　　选哪一个?如果选hadbeen是由于前面有“talked"吗?然而又有书上说虚拟语气从句的时态与主句没有关系,如：Shesuggestedthattheyshoulddo而不是Shesuggestedthattheyhaddone?