Only if you put ______ sun there did the movements of the other planets in ______ sky make sense.

 Only if you put ______ sun there did the movements of the other planets in ______ sky make sense.

A. the; 不填             B. the; the                C. 不填; the             D. a; the

Only if you put ______ sun there did the movements of the other planets in ______ sky make sense.

1. A.
   the; 不填
2. B.
   the; the
3. C.
   不填; the
4. D.
   a; the