it will not be long before you meet the same difficlut situa
it will not be long before you meet the same difficlut situation____by those scientists last year. A.which was dealt with B.as was dealt with C.that had to deal with D.as had to deal with 我猜是C
The correct option is A. 过去式+被动语态.由于主句用一般将来时代替了虚拟语气.所以只有A是正确的. B as作为“像……”或“由于……”引导定语从句,但从句中缺少主语.而且意思上不通.所以B不对. C 虽然加上“不得不”-“had to”在原句里没有什么大碍,但被动语态一定必不可少.所以C需在to后面加个be才正确. D 兼有B和C的毛病.