—I'll miss you，dear.
—It long before we meet again，Mom. It's only one month away from Christmas.
A. will be
B. won't be
C. is
D. isn't
网友回答
A. will be
(答案→)B. won't be
C. is
D. isn't
解析：考查特殊句式。It be 一段时间 before 从句 意为：一段时间以后某事才发生。before引导的时间状语从句中用一般现在时代替将来时，主句用将来时。而根据It's only one month away from Christmas可知时间不长，所以前面用否定式。句意：—亲爱的，我会想你的。—不久以后我们就能再次见面，妈妈，现在里圣诞只有一个月。