In her letters she asked them to decide a day for ____mothersA.both B.all C,every D.only her 我一直纠结于选B还是选C,不知道选哪一个,选那个的理由是什么.

问题描述:

In her letters she asked them to decide a day for ____mothers
A.both B.all C,every D.only her 我一直纠结于选B还是选C,不知道选哪一个,选那个的理由是什么.

选B 后面mothers 是复数

选B
all 加复数名词,C 加单数。

mothers是复数形式,所以肯定不能用C了,every是要加名词单数的.
all是全部的意思,加名词复数