the old lady has three sons,(),luckily for her,works as a doctor.A.none of whomthe old lady has three sons,(),luckily for her,works as a doctor.A.none of whom B.one of whom C.either of whom D.all of whom

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theoldladyhasthreesons,(),luckilyforher,worksasadoctor.A.noneofwhomtheoldladyhasthreesons,(),luckily

the old lady has three sons,(),luckily for her,works as a doctor.A.none of whomthe old lady has three sons,(),luckily for her,works as a doctor.A.none of whom B.one of whom C.either of whom D.all of whom
the old lady has three sons,(),luckily for her,works as a doctor.A.none of whom
the old lady has three sons,(),luckily for her,works as a doctor.
A.none of whom B.one of whom C.either of whom D.all of whom

the old lady has three sons,(),luckily for her,works as a doctor.A.none of whomthe old lady has three sons,(),luckily for her,works as a doctor.A.none of whom B.one of whom C.either of whom D.all of whom
你好这里选B
按照句意理解,这个女士有三个孩子,幸运的是,其中一个是医生.
A是没有人是医生,与幸运的相矛盾,所以A错
C,either of 是两个中的任意一个,这里有三个儿子,所以错
D,all of 是三个儿子都是医生,但是后面的谓语动词works告诉我们,这里是第三人称单数,所以D也错.
只能选B

选B。三个中的一个,用one of whom.

B which 引导非限定性定语从句,后work是三单,所以是one of
either 指两者中任一个

B 三单

学习是一件愉快的事! (*^__^*)
请及时采纳,多谢!

选B,后面动词works是第三人称单数,所以必然有一个人是医生,A是没有人,B是任一个人,D是所有人