1. I appreciate _______ the opportunity to work in your company two years ago.
A. giving                                                                B. to give
C. being given                                                               D. to be given
2. —Any danger for the patient _______ on by Dr. Smith?
—Hard to say. Doctors are trying their best.
A. to operate                                                           B. being operated
C. to be operated                                                     D. operating