Question

complete the sentence with the past progressive form of the verb. sit felix quietly in his living room, studying for a biochemistry exam, when loud music started blaring from a neighboring apartment.

Explanation:

La forma progresiva pasada se forma con el verbo "to be" en pasado (en este caso "was") y el gerundio del verbo principal (en este caso "sitting"). La estructura es "subject + was/were + verb - ing". Aquí, el sujeto es "Felix" (singular), por lo que se usa "was".

Answer:

was sitting