-Let’s go fishing if it this weekend. But nobody knows if it .A. is fine will rain

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