I don't know if he ________. He will come if it ________.

1. A.
   comes. won't rain
2. B.
   will come, doesn't rain
3. C.
   comes, doesn't rain
4. D.
   will come, won't rain

---I don't know if he ______.

---He will come if it ______.

1. A.
   comes; won't rain
2. B.
   will come; doesn't rain
3. C.
   comes; doesn't rain
4. D.
   will come; won't rain

--- I don’t know if he ____.

--- He’ll come if it ___

1. A.
   comes, won’t rain
2. B.
   will come, doesn’t rain
3. C.
   comes, doesn’t rain
4. D.
   will come, won’t rain

I don't know if he ________. He will come if it ________.

[　　]

A．comes. won't rain

B．will come, doesn't rain

C．comes, doesn't rain

D．will come, won't rain