My mother told us that we would not be＿＿christmas gifts because there was not enough money.
答案选：B
be receiving 不是表被动,被动语态是be done的形式,有些词后面加doing确实表被动,但不包括be动词.如：worth doing 值得被...
这里其实是用进行时表将来的,比如《走遍美国》书上有这么一句：
What are you doing tomorrow?
i will be meeting you at the airport.
你这句话中,主句用了过去式：told us,所以相应的从句变成了would be doing 而不是 will be doing
翻译：母亲告诉我们,我们不会收到圣诞礼物,因为钱不够.
because后面决定了不能选A.老师说这是虚拟语气，would be doing 约=would do？？帮忙解释一下