On Christmas day,____ of us was excited because we each ___ a present.

问题描述:

On Christmas day,____ of us was excited because we each ___ a present.
A every one;was given
B every one;were given
为什么后面用was不用were

题目里说的是each,每一个人,而不是we.
was是be的第一和第三人称单数的过去式,
而were是are的过去式.