He offered to drive me to the airport,         I felt so grateful.

A. to whom                  B. to which            C. for which          D. for whom

He offered to drive me to the airport,         I felt so grateful.

A. to whom                  B. to which            C. for which          D. for whom

He offered to drive me to the airport,         I felt so grateful.

A. to whom                  B. to which            C. for which          D. for whom

He offered to drive me to the airport,         I felt so grateful.

1. A.
   to whom
2. B.
   to which
3. C.
   for which
4. D.
   for whom