—Look at the clouds! I think it’s going to _______.

       —Oh, we have to run home.         

      A．snow              B．raining           C．rain              D．snowing

Look at the clouds, I think it ________ rain soon.

1. A.
   is going to
2. B.
   will
3. C.
   shall
4. D.
   may be

---Look at the clouds! I think it’s going to ______.

---Oh, we have to run home.

1. A.
   snow
2. B.
   raining
3. C.
   rain
4. D.
   snowing

---Look at the clouds! I think it’s going to ______.
---Oh, we have to run home.

1. A.
   snow
2. B.
   raining
3. C.
   rain
4. D.
   snowing