Jawaban:
My gown had been washed before I took a nap

Penjelasan:

Past Perfect Tense can be used to express an event that was completed at some time in the past before another event occurred.

Sentences Past Perfect Tense has the formula:

(active) S + had + Verb 3 + O

(passive) S + had + been + Verb 3 + by (agent)

From this formula, we can conclude that sentence B is a sentence that uses the Past Perfect Tense passive form because it has the following structure:

My gown (S) had been washed (Verb 3) before I took a nap. So the writer's dress had been washed first before she took a nap.

So the correct answer is B. My gown had been washed before I took a nap

Hope it helps.
Thank you. Answer by Cindra prithalita