The dog is being walked by Eli after Eli had finished his homework.

Eli had walked the dog after he had finished his homework.

Explanation:

Active voice is when the subject does the action (Eli had walked the dog instead of the dog had been walked by Eli) and perfect tense is when an action had happened and uses the verb to have.  Parallel structure is when all of the verbs use the same tense.  (Eli had walked the dog after he had finished his homework, not Eli is walking the dog after he had finished his homework.  it does not make sense because it is using two verb tenses.)

d) she is both terrified and excited by the idea of returning to school.

a) she takes one day at a time.

d) she felt like she was an object of ridicule.

d) she tells her daughter not to worry about it because things will get better.\

b) elnora needs money for books and out-of-town tuition. she will raise the money herself.