We won’t go to the Great Wall if it the day after tomorrow.　　A. won’t rainB. is rainingC.

问题补充：

We won’t go to the Great Wall if it the day after tomorrow.

A. won’t rain

B. is raining

C. rains

D. doesn’t rain

答案：

A. won’t rain

B. is raining

(答案→)C. rains

D. doesn’t rain

解析：考查if从句的用法。由于主句是将来时所以if引导的从句用一般现在时表将来，故选C.意思：如果后天下雨，我们不去长城。