Walter offered us a lift when he was leaving the office, but our work ________, we refused the offer．

1. A.
   not finishing
2. B.
   had not been finished
3. C.
   not having finished
4. D.
   not finished

Walter offered us a lift when he was leaving the office, but our work _______, we refused the offer.

A. not finishing         B. had not been finished? C. not having finished D. not finished

Walter offered us a lift when he was leaving the office, but our work _______,we refused the offer.

A. not finishing

B. had not been finished?

C. not having finished?

D. not having been finished?

Walter offered us a lift when he was leaving the office, but our work _______, we refused his offer.

Walter offered us a lift when he was leaving the office, but our work ______, we didn’t accept the offer.

A. not being finished                B. having not been finished

C. had not been finished             D. not having finished