Answer: These are the right answers:
QUESTION 2. Camila <u>tenía</u> fiebre.
QUESTION 3. La enfermera siempre me <u>tomaba</u> la temperatura.
QUESTION 4. Enrique <u>tenía</u> dolor de cabeza con frecuencia.
QUESTION 5. A los niños les <u>dolía</u> la garganta.
QUESTION 6. A nosotros no nos <u>gustaba</u> ir al dentista.
QUESTION 7. Yo <u>era</u> alérgico a la aspirina.
Explanation: Just to elaborate a little on the answer, it can be added that in this exercise they are asking you to complete the sentence with the so-called "imperfecto" tense, or past tense in English. This tense indicates that the action that the verb expresses took place simultaneously to an action in the past. So, for instance, in question 4, you are saying that Enrique often had a headache. If the verb ends in -AR, you form the imperfecto by adding –ABA and the corresponding endings, and if the verb ends in -ER or -IR you form the imperfecto by adding –ÍA and the corresponding endings according to each person. Irregular verbs such as "ser" (to be) have their own specific form.