We'll stay at home if it          tomorrow．

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

We’ll stay at home if it       tomorrow．

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

We ________ at home if it ________ tomorrow．

A．will stay；is going to rain                         B．stay；is going to rain

C．will stay；rains                              D．stay；rains

If it______ tomorrow, we______ at home.

1. A.
   will rain, will stay
2. B.
   will rain, stay
3. C.
   rains, stay
4. D.
   rains, will stay