We need to think outside of box _____ we are to come up with something really new.

1. A.
   so that
2. B.
   as long as
3. C.
   once
4. D.
   if

We need to think outside of box _____ we are to come up with something really new.?A.so that                  B.as long as?

    C.once                  D.if?

We need to think outside of box ______ we are to come up with something really new.

　 A. so that　 B. as long as　　 C. once　　　　　　 D. if