---Could you tell me ________ tomorrow?

---Sorry, I don't know．If it ________, we'll stay at home．

1. A.
   if does it rain, rains
2. B.
   if it rains, rains
3. C.
   if it will rain, will rain
4. D.
   if it will rain, rains

 Could you tell me if it _____tomorrow?

   A. rain  B．will rain       C．raining   D．rains

Could you tell me if it ______ tomorrow?

A．rains

B．rain　　

C．will rain

D．is raining