-If you ________ a new idea, please call me as soon as possible．

-Sure, I will．

1. A.
   keep up with
2. B.
   catch up with
3. C.
   feed up with
4. D.
   come up with

-If you ______ a new idea，please call me as soon as possible．

-Sure，I will．

A．keep up with　　

B．catch up with

C．feed up with　　

D．come up with