26. Mary is cutting a cake with a sharp knife.
→ The cake is being made with a sharp knife by Mary.
27. Why didn’t they help him?
→ Why wasn’t he helped ?
28. The children looked at the woman with a red hat.
→ The woman with a red hat was looked by the children.
29. They have provided the victims with food and clothing.
→ The victims have been provided with food and clothing.