such a good chance, how could she let it slip away?

A. Having been given                           B. Having given

C. To being given                              D. To have given

________ such a good chance, how could she let it slip away?

1. A.
   Having been given
2. B.
   Having given
3. C.
   To being given
4. D.
   To have given

— Was her concert a great success? 

— Sure. _______ such a good chance, how could she let it slip away?

1. A.
   Having given
2. B.
   Giving
3. C.
   Having been given
4. D.
   Being given