Answer:
A, a, the, the, a, the, the
Explanation:
If the letter of the next word is not a vowel, you will use 'a'. If neither a or an make sense in the blank, you put 'the' instead.
1. to do infinitive
2. done past participle
3. did past
Greek stories are usually trying to explain the reasons why bad stuff are on Earth and they also try to teach lessons so most of them have sufferings as endings