—Tom wants to know if you will have a picnic tomorrow.—Yes. But if it we’ll play chess i

问题补充：

—Tom wants to know if you will have a picnic tomorrow.

—Yes. But if it , we’ll play chess instead.

A. will rain

B. rained

C. is raining

D. rains

答案：

A. will rain

B. rained

C. is raining

(答案→)D. rains

解析：本题考查时态。根据主句用的为将来时态，故从句用一般现在时代替将来时，选D。