Explicație:
1. My mother was shocked by how shocking the accident was last night.
2. The boys were frightened by the frightening roller-coaster ride.
3. I am annoyed by how annoying that person in front of us is.
4. That grammar lesson was boring. I am bored reading about grammar.
5. The flight assistant is tired right now. Her flight was tiring because of the twelve-hour duration.
6. Smoking is always disgusting. I am disgusted by the smell of it.
