After months of watching De Lacey's family, the creature decided to introduce himself. The creature was surprised about what happened. Unlike the other people he had introduced himself to, De Lacey's family was kind and accepting, or so he thought. Since the man was blind, he could not see how hideous the creature actually was, so he let him in and agreed to listen to his story.
The answer is an adverb clause because "have been" is considered an adverb clause...
Answer:
The top one i think or it would be the bottom one but the bottom one makes more sense