I don’t know if she _______ next month. If she _______, let me know.
A. comes; comes B. will come; comes
C. comes; will come D. will come; will come
I don’t know if she _______ next month. If she _______, let me know.
A. comes; comes B. will come; comes
C. comes; will come D. will come; will come
B 第一个if意为“是否”，引导宾语从句；第二个if意为“如果”，引导条件状语从句，
常用一般现在时表将来。由句意“我不知道下个月她是否会来，如果她来，让我知道”
可知选B。