1. A. what Jeff has done
B. what did Jeff do
C. whether Jeff has done
D. where is Jeff now
2. A. if he doesn't come
B. whether he didn’t come
C. if he hadn’t come
D. unless he come
3. A. the thing he has done
B. the thing had he done
C. anything he had done
D. the thing in which he had done
4. A. will never forgive
B. wouldn’t have forgiven
C. had never forgiven
D. can’t forgive