1.B. He doesn't have to do a lot of work.
1.C. Does he have to do a lot of work?
2.B. She didn't wash the clothes.
2.C. Did she wash the clothes?
3.B. They haven't washed the clothes.
3.C. Have they washed the clothes?
4.B. She doesn't have any young children.
4.C. Does she have any young children?
5.B. They don't take their clothes to the laundromat.
5.C. Do they take their clothes to the laundromat?