The answers are "early, and tomorrow." Adverbs are words that makes the sentence understandable or able to be modified. Modification could include the verb, the adjective, could even be a another adverb, etc... anything that would be able to make the sentence better.
Hope this helps!
I think the answer would be B
Look at the underlined section marked (12). Choose the answer that best corrects this sentence, if appropriate. I think-> B) Animals used in a Species Survival Plan are sometimes taken out of the public viewing areas for a private, less stressful area to breed and care for their offspring in the first critical weeks
Harry Potter, Blubber, The Shack