<h3>Fill in the blank with the correct form of preterite or imperfect of the verb in parentheses. Tú Answer (used to be) bajo. (ser)</h3>
Answer: Tú eras bajo.
Translation: You used to be short.
Explanation: If the action of the verb in the past was habitual, then the correct verb tense is imperfect. Since the subject in this sentence is "Tú", that is second-person in the singular, so the correct form is: Tú eras.
Habia because Habia means there were. On the other hand we have contaba which men tell, saludaba which mean said hi, and nacia which means born. so your best bet is Habia