<span>Lillian will have been talking for two hours by the time she finishes her classical music lecture.
Let's assume that the underlined verb is "will have been talking." The underlined verb is in the tense of future perfect progressive. Because of the word will, it gives us the clue that it is future. Because of the line have been talking will give us the clue that it is perfect progressive.
</span>
If you're asking me what mitochondria is similar to then it would be something energetic or something that makes energy out of proteins. So it would be a powerhouse or food.
Can you comment the article because there's no image on a article. Hope this helped, you probably didn't notice.
Answer:
I belive the best answers are 2 3 and 4.
