Answer:
B. the repetition of words and phrases
It means like don't over use it or don't under use it. Use it for when you need it and when its important rather then use it for something that doesn't matter.
Its they give them the flowers that make them forget their homes and families. all they feel is intentness or something like that
Answer: By the time they came, we had finished our dinner.
Came is past tense, so I would assume it would be had finished