题目内容：

It is more than six months now _______ she left home and it will be another three days _______ she returns home.
A. since; from
B. since; before
C. before; when
D. when; since

优质解答

B
注意的是another 和时态的用法,前半句是现在时和过去时,后半句是还没发生的将来时,所以这句话说出的时间应该是在两者之间,所以用“她离离开家已经过了6个月了”和“她还要3天才能回家”的 since和before.所以选B
但是,这道题的句子语法其实是有一些错误的,可能是因为你们现在还没学,但是正确的说法是：
It has been more than six months now since she left home and it will be another three days before she returns home.
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