单选题 If it ______, they'll have a sports meeting in their school.
A. isn't rain B. doesn't rain C. didn't rain D. won't rain

【正确答案】 B
【答案解析】[解析] 此题考查句子时态。在if引导的条件状语从句中，如果主句是一般将来时态，则从句须用一般现在时态，故选B。