We’ll go for a picnic if it ________tomorrow.A. isn’t going to rain B. won’t rain C. doesn’t rain D. isn’t raining 为什么不是B

问题描述:

We’ll go for a picnic if it ________tomorrow.
A. isn’t going to rain B. won’t rain C. doesn’t rain D. isn’t raining 为什么不是B

C.doesn’t rain
条件句里面,主句用将来时,从句用一般现在时.