肯定选B. A.either虽然有“也”的意思,但其一般用语否定句中,例:I haven't seen this film,and my brother hasn't either. B.as well 作为副词时,有“也”的意思,常位于句末,并且常与and,but搭配. C.没有as good这种说法. D.too意为"也;并且;还"时,在肯定句中常位于句末,但应用逗号隔开,所以D是不对的.
either 用在否定句中 As well [简明英汉词典] 倒不如, 还是...的好 最好...还是(It will be As well to stop that young screamer. 但是最好还是让那个大哭大叫的孩子住声。) as good as 和...一样, 实际上相当于... 选D