---How will you go to the zoo tomorrow?-If it tomorrow Ill go there by car.A. rainin

问题补充：

---How will you go to the zoo tomorrow?

---If it tomorrow, Ill go there by car.

A. raining

B. rain

C. rains

D. will rain

答案：

A. raining

B. rain

(答案→)C. rains

D. will rain

解析：句意：你明天怎么去动物园？——如果明天下雨，我就乘车去哪儿。当主句为将来时态时，条件句中用一般现在时态，表示将来的动作。从句主语it为第三人称单数，故选C。