Well, your question is "How" do you answer the question, so I won't give you the answers (because I have no clue anyways)
Your simply answer 7-15 by filling in the missing word in the box. The sentences are missing words, and you have to find the correct form of that word that fits the sentence and makes it complete. In spanish, of course.
~Hope this helps!
The verb caer means 'to fall,' and it can be used in the two past tenses, preterite and imperfect, to describe things falling in the past. ... When it's used in the imperfect tense, it's describing repeated falls in the past.