Your name is a Proper Noun. First name Last name. That's a proper noun.
Cathy is considerate to be so keen to make sure everyone is happy. I would say Robby and Sally would consider each other siblings or classmate sweet hearts.
Lapicero (liviano,pesado,grande,pequeño)
Mascota ( travieso, esponjoso, adorable)
Escuela ( importante, Grande, Educativo)
Libro ( El libro antiguo)
Contract, background of that business
I think it's B) because a missing modifier is when a sentence is broke apart incorrectly and I don't think that B) is correctly separated. I could rearrange the sentence and make it say, "The thunder frightened me as I slept peacefully" and it would sound better. I hope I helped a bit.