Which verb form correctly completes this sentence? Mientras tú en la bibloteca, yo estaba leyendo el periódico en el parque. A. estabas B. estás C. estábamos D. estaban

A. estabas.

Explanation:

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.

Hopes this helps!!

yes you are correct          

de estos colores. sounds about right.