younger than 26,younger than 26 yrs old,younger than 26 years,younger than 26 yrs都是对的吗?在书面语中,YRS可用吗?

younger than 26,younger than 26 yrs old,younger than 26 years,younger than 26 yrs都是对的吗?在书面语中,YRS可用吗? 单项选择,这是我自己编的一道题目,但我自己都不知道正确答案是哪个,顺便检查一下句中有无语法错误.——Is she about 3 years （ ） than you?——No,I’m younger than she （ ）.A.younger,/ B.older ,is C.youn my younger brother younger than me. Is Amy younger than Sam? English teacher is ___than our Chinese teacher A,young B.younger C.youngest D.more youn应选哪个 Yes,Tom is younger than lily Your mother look younger than her mother. Your mother l______ younger than you My mather___(look) younger than my aunt. you are younger than 翻译这句话 you look younger than before 中的句子成分 Your twin brouther ( )younger than you. my firend is younger than mine I am younger than you .同义句 you look younger than you really are parentsknow better than the younger generation She looks younger than she is.和She looks younger than she you are younger than I 还是you are younger than me?