I didn’t see Laura at the party last night. Do you know _______?

       A. why didn’t she come               B. what happened

           C. when would she arrive             D. where she has been

I didn’t see Laura at the party last night. Do you know _______?

1. A.
   why didn’t she come
2. B.
   what happened
3. C.
   when would she arrive
4. D.
   where she has been