how do you go to the zoo tomorrow.if it ( ) tomorrow

问题描述:

how do you go to the zoo tomorrow.if it ( ) tomorrow
-How do you go to the zoo tomorrow?
-If it ________ tomorrow,I'll go there by car.
  A.raining B.rain C.rains D.will rain

选C,tomorrow表示将来,但是后面已经有了一般现在时,所以遵循主将从现