问题补充：
---Let’s go fishing if it this weekend. --- But nobody knows if it .
A. is fine, will rain
B. will be fine, rains
C. will be fine, will rain
D. is fine, rains
答案：
(答案→)A. is fine, will rain
B. will be fine, rains
C. will be fine, will rain
D. is fine, rains
解析：if 引导的宾语从句时，根据本身时态决定，而在if 引导的条件状语从句中，主句为一般将来时，从句要用一般现在时代替将来时，故选A
