Mientras tú en la bibloteca, yo estaba leyendo el periódico en el parque. a. estabas b. estás c. estábamos d. estaban

For this case we have the following statement:

While you in the library, I was reading the newspaper in the park.

What we should do is fill in the blank with the correct verb.

The correct verb conjugated in the past simple is:

You were

We have then:

While you were in the library, I was reading the newspaper in the park.

The translation of the sentence in English is:

Mientras tú estabas en la bibloteca, yo estaba leyendo el periódico en el parque.

A. estabas