where are the lines?
By the way underlined depicts a word or phrase marked with a line under it...
Jim Crow laws still existed in the southern states
Answer:
1. Past tense form is smelled, and the past participle form is smelt
2. Hurt stays the same for both
3. Past tense is forgave while the past participle is forgiven.
4. Past tense is abused and the past participle is abused.
The link between the two is how when you smell something unpleasant it brings back memories of an unpleasant time of your life.