5. I promise that I
this secret to anyone.

I need the entire sentence for context before I can answer the question. All of these options could be a subject, but you need to give context.
<em>Omakayas</em><em> </em><em>loved</em><em> </em><em>dagwaging</em><em> </em><em>(</em><em>fall</em><em>)</em><em> </em><em>season</em><em> </em><em>because</em><em> </em><em>she</em><em> </em><em>felt</em><em> </em><em>pleasant</em><em> </em><em>and</em><em> </em><em>watching</em><em> </em><em>the</em><em> </em><em>raindrops</em><em> </em><em>fall</em><em> </em><em>used</em><em> </em><em>to</em><em> </em><em>give</em><em> </em><em>her</em><em> </em><em>pleasure</em><em>.</em>
<span>Answer:
Huck must examine his conscience throughout the story. Huck's own value system often comes in conflict with Southern white views on issues like racism and organized religion. Huck not only longs to free himself from the physical confines of his being but from the social confines of a very homogenous, and ignorant, status-quo,
"I said I wouldn't, and I'll stick to it. Honest INJUN, I will. People would call me a low-down Abolitionist and despise me for keeping mum – but that don't make no difference. I ain't a-going to tell, and I ain't a-going back there, anyways. So, now, le's know all about it."</span>
Hi, you've asked an incomplete/unclear question. The full question read;
Which of the phrases below is <u>not</u> in the future perfect continuous?
a) You will have been waiting here for three hours by 8 o'clock.
b) You will be waiting for her when her plane arrives tonight.
c) By the end of next month I will have been living here for ten years.
d) When I finish this course, I will have been learning Italian for ten years.
e) Next month I will have been working here for two years.
Answer:
<u>b) You will be waiting for her when her plane arrives tonight.</u>
Explanation:
We make this conclusion because the phrase <em>"will have been" </em> (which is the future perfect of the verb "to be") is often added to the subject of a sentence to make it future perfect continuous.
However, after careful check of all the sentences, we notice all of them except option b used the future perfect continuous phrase, <em>"will have been." </em>